01 / FREE TOOL
Job Quote & Cost Overrun
Itemize labor, materials, equipment and other costs. Compare a target-margin quote with a cost-overrun scenario.
Use job quote & cost overrun →FREE TOOLS. VISIBLE METHODS.
Business & industry calculators
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Accounting & finance
Compare pricing, cash timing, funding and financial performance using figures on a consistent reporting basis.
Explore accounting & finance calculations →02 / FREE TOOL
Project Deposit & Cash Gap
Follow dated receipts and expenses to find the modeled cash gap and minimum feasible deposit.
Use project deposit & cash gap →06 / FREE TOOL
Payment Fee Plan Comparison
Put two payment fee schedules against the same sales volume. Compare monthly charges, net receipts and the transaction volume where costs meet.
Use payment fee plan comparison →09 / FREE TOOL
Break-Even Jobs & Revenue
Calculate the whole jobs needed to cover monthly fixed costs or reach a profit target. Compare that threshold with your expected workload.
Use break-even jobs & revenue →11 / FREE TOOL
Borrowing vs Supplier Discount
Compare paying an invoice in full at its net due date with borrowing the discounted amount to pay early. Include the financing rate, day count and one total financing fee.
Use borrowing vs supplier discount →13 / FREE TOOL
Fully Loaded Hourly Labor Cost
Spread annual wages, estimated employer burden, benefits and allocated overhead across paid hours and productive hours. Keep the cost estimate separate from your customer billing rate.
Use fully loaded hourly labor cost →21 / FREE TOOL
Asset & Equity Returns
Calculate period ROA and ROE using beginning/end averages. Keep losses and negative equity visible instead of forcing positive ratios.
Use asset & equity returns →22 / FREE TOOL
Cash Burn & Runway
Compare monthly cash inflow and outflow with unrestricted cash. Estimate a constant-rate runway without treating accounting profit as cash.
Use cash burn & runway →23 / FREE TOOL
Cash Conversion Cycle
Combine compatible inventory, receivable and payable day estimates. Preserve a negative cash cycle when supplier terms exceed operating days.
Use cash conversion cycle →24 / FREE TOOL
Debt & Leverage Ratios
Derive book equity, net interest-bearing debt and simplified leverage ratios. Keep nonpositive equity and EBITDA limitations explicit.
Use debt & leverage ratios →25 / FREE TOOL
Interest Coverage
Calculate a simplified times-interest-earned ratio from period earnings and interest expense, including loss and zero-interest cases.
Use interest coverage →26 / FREE TOOL
Inventory Turnover & Days
Calculate turnover and implied holding days using at-cost beginning/end inventory and compatible period COGS.
Use inventory turnover & days →27 / FREE TOOL
Liquidity Ratios
Build current, quick and cash coverage from explicit asset categories rather than entering overlapping totals.
Use liquidity ratios →28 / FREE TOOL
Margin & Markup
Use one cost and selling price to compare unit profit, margin on price and markup on cost.
Use margin & markup →29 / FREE TOOL
Profit & Margin Bridge
Compare revenue, variable costs and fixed costs across two compatible periods. See the arithmetic contributions to profit and margin change.
Use profit & margin bridge →32 / FREE TOOL
Restaurant Prime Cost
Build a reduced food/beverage usage cost and add period labor. Compare costs with the same period sales without assuming an industry target.
Use restaurant prime cost →33 / FREE TOOL
Retail Shrink & Write-offs
Compare recorded and counted inventory at cost. Add only separate losses and estimate their sales-equivalent at an entered contribution margin.
Use retail shrink & write-offs →34 / FREE TOOL
Retainer vs Hourly
Model a fixed service retainer with included hours and an overage rate against straight hourly billing for the same work.
Use retainer vs hourly →71 / FREE TOOL
Budget vs Actual Variance
Compare one period of revenue, labor, materials and other costs with its budget. Separate a spending variance from its opposite effect on modeled profit.
Use budget vs actual variance →72 / FREE TOOL
Business Loan Repayment
Build an end-of-month repayment schedule with monthly cent-rounded interest, a deducted upfront fee and an adjusted final payment.
Use business loan repayment →73 / FREE TOOL
Investment Dilution & Ownership
Calculate the new investor share and one existing owner’s percentage after a primary investment at an entered pre-money valuation.
Use investment dilution & ownership →74 / FREE TOOL
Invoice Aging & Collections
Enter five due-date aging buckets and your collection assumptions. See the overdue total and an oldest-first review table without entering customer details.
Use invoice aging & collections →75 / FREE TOOL
Order Contribution After Fulfillment
Combine discounted goods and charged shipping, then deduct products, pick-and-pack, delivery and your payment-fee assumptions.
Use order contribution after fulfillment →76 / FREE TOOL
Payables Payment Timing
Arrange receipts and supplier payments in four thirty-day buckets. Compare opening and bucket-end cash with an entered minimum buffer.
Use payables payment timing →77 / FREE TOOL
Receivables Collection Performance
Calculate turnover and implied collection days alongside a bridge from opening receivables, credit sales, collections and noncash reductions.
Use receivables collection performance →78 / FREE TOOL
Returns & Refund Profitability
Model a batch of orders with partial or full refunds, return handling and your own inventory and processing-fee recovery assumptions.
Use returns & refund profitability →79 / FREE TOOL
Startup Funding Requirement
Combine startup outlays, opening inventory, deposits and a positive-burn reserve, then compare the total with available funds.
Use startup funding requirement →80 / FREE TOOL
Working Capital Requirement
Estimate receivables, inventory and supplier credit from steady activity and entered timing, then add minimum operating cash.
Use working capital requirement →121 / FREE TOOL
Business DCF Valuation Scenarios
Discount three explicit annual cash flows and a declared terminal-growth scenario, then subtract signed net debt.
Use business dcf valuation scenarios →122 / FREE TOOL
Capital Project NPV, IRR & Payback
Compare three year-end project cash flows using NPV, year-end recovery checkpoints and an IRR only when the numerical method supports it.
Use capital project npv, irr & payback →123 / FREE TOOL
Contribution & Target Profit Pricing
Relate unit contribution to fixed costs, a target profit and a whole-unit sales volume.
Use contribution & target profit pricing →124 / FREE TOOL
Early Payment Discount — Seller View
Compare the discount a seller offers with a simple estimate of financing cost avoided by receiving cash sooner.
Use early payment discount — seller view →125 / FREE TOOL
Extra Debt Repayment Comparison
Compare one fixed monthly amortization with an added monthly amount and an entered one-time prepayment charge.
Use extra debt repayment comparison →126 / FREE TOOL
Loan Refinance Break-Even
Compare cash payments and remaining debt at the same holding-period checkpoints so a longer loan does not masquerade as a saving.
Use loan refinance break-even →127 / FREE TOOL
Office Lease vs Ownership Cash Cost
Compare a common occupancy horizon with entered lease costs, financing, ownership costs and an explicit exit sale.
Use office lease vs ownership cash cost →128 / FREE TOOL
Property Debt Service Coverage
Apply an explicitly chosen reserve treatment to entered property NOI before comparing it with annual debt service.
Use property debt service coverage →129 / FREE TOOL
Property Development Cash Scenario
Separate entered project profit from three funding checkpoints, one loan draw and its repayment at sale.
Use property development cash scenario →130 / FREE TOOL
Renovation Cash-Flow Payback
Compare renovation outlay and disruption contribution with entered ongoing cash gains and a discounted horizon.
Use renovation cash-flow payback →131 / FREE TOOL
Rental Occupancy Cash Break-Even
Find the collected share of rent capacity that covers variable costs, fixed expenses, debt payments and reserves.
Use rental occupancy cash break-even →132 / FREE TOOL
Rental Property Cash Flow & Cap Rate
Separate effective income, defined NOI, reserves and debt cash flow before calculating a stated cap-rate ratio.
Use rental property cash flow & cap rate →133 / FREE TOOL
Rolling Cash-Flow Forecast
Plan a rolling cash forecast with three entered event days. See receipts, payments and financing, the lowest modeled balance and its first day, and funding needed to retain your cash buffer.
Use rolling cash-flow forecast →134 / FREE TOOL
Sales Mix Break-Even
Fix a whole-unit two-product basket and calculate the baskets needed to cover fixed cost and a target profit.
Use sales mix break-even →135 / FREE TOOL
Solar Levelized Cost of Energy
Divide a finite discounted cost schedule by discounted output using entered first-year generation and degradation.
Use solar levelized cost of energy →Construction & materials
Estimate quantities, whole-package purchases and supplier costs from your actual dimensions, product yields and quotes.
Explore construction & materials calculations →03 / FREE TOOL
Bagged Concrete vs Ready-Mix
Compare whole bags and ready-mix orders with quoted supplier fees, equipment and labor.
Use bagged concrete vs ready-mix →04 / FREE TOOL
Metal Stock & Cutting Cost
Compare stock lengths for equal-length parts, including cuts, whole bars, minimum orders and delivery.
Use metal stock & cutting cost →16 / FREE TOOL
Aggregate Base Coverage
Estimate metric base volume, apply your allowance and bulk density, then round the material purchase to a supplier order increment.
Use aggregate base coverage →17 / FREE TOOL
Concrete Delivery Loads
Split one entered concrete volume into capacity-first truckloads. Separate physical loads, billed minimums, delivery charges and flat short-load fees.
Use concrete delivery loads →51 / FREE TOOL
Masonry Unit Quantity
Estimate units for one rectangular wall from net area and nominal module size, then round to whole supplier packs.
Use masonry unit quantity →52 / FREE TOOL
Drywall Sheet Quantity
Deduct openings, add your area allowance and estimate whole sheets for one layer of one board size.
Use drywall sheet quantity →53 / FREE TOOL
Sealant Tube Quantity
Model a rectangular joint, add your loss allowance and round the purchase to whole tubes of the entered volume.
Use sealant tube quantity →54 / FREE TOOL
Metal Coil Length
Use net metal mass, uniform width, thickness and density to estimate length and cost per usable metre.
Use metal coil length →55 / FREE TOOL
Concrete Pour Duration
Combine your effective placement rate, setup and pauses to estimate elapsed crew time and its value.
Use concrete pour duration →56 / FREE TOOL
Earthmoving Truck Loads
Apply an entered swell allowance to bank volume, then use both loose-volume and approved payload constraints.
Use earthmoving truck loads →57 / FREE TOOL
Bucket Payload Estimate
Combine nominal bucket volume, fill and loose density. Compare the estimated material mass with a limit you supply.
Use bucket payload estimate →101 / FREE TOOL
Excavation Volume
Calculate in-place rectangular volume, add your quantity allowance and extend an entered price per bank cubic metre.
Use excavation volume →102 / FREE TOOL
Earthwork Swell & Shrink
Apply separately entered bank-to-loose and bank-to-compacted factors, with a density-based mass perspective.
Use earthwork swell & shrink →103 / FREE TOOL
Material Stockpile Quantity
Model a pile with a constant trapezoidal cross-section and vertical ends, then apply your bulk density and unit value.
Use material stockpile quantity →104 / FREE TOOL
Mortar Bag Quantity
Enter the product’s masonry-units-per-bag coverage, add your allowance and round the mortar purchase to whole bags.
Use mortar bag quantity →105 / FREE TOOL
Roofing Area & Material
Calculate identical rectangular roof-plane areas using measured sloped lengths, then apply product coverage and your allowance.
Use roofing area & material →106 / FREE TOOL
Steel Coating Surface Area
Include selected broad faces and all four edges of identical rectangular plates, then round coating to whole containers.
Use steel coating surface area →107 / FREE TOOL
Stucco Material Coverage
Use net area, entered coat thickness and product volume yield to budget one product in whole bags.
Use stucco material coverage →108 / FREE TOOL
Paver Joint Sand
Use the coverage row for your actual pavers and joints, add an ordering allowance and round to whole bags.
Use paver joint sand →186 / FREE TOOL
Concrete Shape Volume
Rectangular volume is length × width × depth.
Use concrete shape volume →187 / FREE TOOL
Drywall Finishing Material
Compound kilograms = net board area × entered kilograms per square metre × (1 + allowance / 100).
Use drywall finishing material →188 / FREE TOOL
Metal Order Cost by Weight
For a positive order, billable mass is the greater of physical mass and minimum billable mass.
Use metal order cost by weight →189 / FREE TOOL
Metal Shape Weight
Calculate volume in cubic metres, then multiply by entered density for mass.
Use metal shape weight →190 / FREE TOOL
Rectangular Sheet Cutting Yield
Subtract total edge trims from each stock dimension.
Use rectangular sheet cutting yield →191 / FREE TOOL
Stone Veneer Mortar Quantity
For each product line, required bag count = ceil(area × (1 + allowance / 100) ÷ matching coverage per bag).
Use stone veneer mortar quantity →192 / FREE TOOL
Suspended Ceiling Tile & Material
Estimate ceiling tiles, whole packs and material cost for a rectangular room. Add wall-angle and runner costs from your independently reviewed grid takeoff when needed.
Use suspended ceiling tile & material →Economics
Explore how price, quantity, discounting and changing assumptions affect a simplified economic scenario.
Explore economics calculations →07 / FREE TOOL
Price Increase & Sales Loss
See how many sales you could lose after a price increase while preserving the same modeled profit. Test a volume-loss scenario against your current business.
Use price increase & sales loss →14 / FREE TOOL
Make vs Buy Cost
Compare two fixed-plus-variable cost plans over the same volume and period. See how the lower-cost option changes with volume and where the cost lines meet.
Use make vs buy cost →30 / FREE TOOL
Revenue Growth & CAGR
Compare total revenue growth with its smoothed compound annual rate over a stated positive number of years.
Use revenue growth & cagr →31 / FREE TOOL
Inflation & Input Costs
Compare an unchanged annual cost with a constant entered increase or decrease over a bounded planning horizon.
Use inflation & input costs →35 / FREE TOOL
Hotel Rate & Occupancy
Compare two entered ADR/occupancy scenarios after a channel-fee percentage and variable occupied-room cost. Demand remains your assumption.
Use hotel rate & occupancy →136 / FREE TOOL
Observed Price Elasticity
Compare midpoint and base-period quantity responses to a price change without interpreting two observations as a causal demand curve.
Use observed price elasticity →137 / FREE TOOL
Supplier Quantity Discount Decision
Compare purchase cash, holding costs and ending inventory value for two orders that cover the same entered use.
Use supplier quantity discount decision →Energy & utilities
Compare consumption, tariffs, efficiency and operating costs with explicit input-energy and useful-output boundaries.
Explore energy & utilities calculations →10 / FREE TOOL
Equipment Electricity Cost
Estimate electricity use from input power, equipment count and operating time. Apply your energy rate and a separately entered monthly charge.
Use equipment electricity cost →58 / FREE TOOL
Facility Electricity Intensity
Calculate annual electricity-only intensity and compare it with a reference you enter on the same floor-area basis.
Use facility electricity intensity →59 / FREE TOOL
Generation Capacity Factor
Compare actual energy with continuous output at an entered constant capacity over the same period.
Use generation capacity factor →60 / FREE TOOL
Lighting Retrofit Savings
Compare the same fixture count and annual hours at two entered input wattages, then add your maintenance saving assumption.
Use lighting retrofit savings →109 / FREE TOOL
Commercial Electricity Bill
Model one billing period with two sequential energy tiers, an entered billable demand, one fixed charge and a stated tax rule.
Use commercial electricity bill →110 / FREE TOOL
Time-of-Use Electricity Cost
Hold total kWh and tariff rates constant while changing the share assigned to peak and off-peak periods.
Use time-of-use electricity cost →111 / FREE TOOL
Battery Runtime Scenario
Apply usable share and one-way conversion efficiency to nominal DC energy, then divide available AC energy by a constant AC load.
Use battery runtime scenario →112 / FREE TOOL
Fuel Cost per Input Energy
Turn your fuel unit price and heat content into input-energy cost, including a separate delivered-purchase perspective.
Use fuel cost per input energy →113 / FREE TOOL
Useful Heating Cost
Use an entered output/input efficiency and matching fuel heat content to estimate metered fuel use and annual operating cost.
Use useful heating cost →114 / FREE TOOL
Heat Pump vs Boiler Cost
Hold useful heat constant, apply an entered seasonal COP and boiler efficiency, then compare rounded energy and fixed operating costs.
Use heat pump vs boiler cost →115 / FREE TOOL
Motor Efficiency Savings
Convert the same mechanical shaft output through two entered efficiencies, then compare annual energy charges and simple payback.
Use motor efficiency savings →138 / FREE TOOL
Battery Arbitrage Scenario
Price one supplied charge/discharge cycle after round-trip loss and a user-stated degradation allowance, then extend it over counted cycles.
Use battery arbitrage scenario →139 / FREE TOOL
Boiler Efficiency Cost Scenario
Compare two output/input boiler efficiencies against the same useful-heat requirement and fuel-energy price.
Use boiler efficiency cost scenario →140 / FREE TOOL
Compressed-Air Heat-Recovery Value
Cap entered recoverable compressor heat by coincident usable demand and value only that modeled useful heat.
Use compressed-air heat-recovery value →141 / FREE TOOL
Compressed Air Leak Cost
Calculate the electricity cost of a measured compressed air leak in CFM or m³/min, using pressurized hours and matched compressor energy data.
Use compressed air leak cost →142 / FREE TOOL
Compressed Air Unit Cost
Calculate electricity-only cost per m³ and measured kWh per m³ from total compressor electricity and total delivered air volume for the same period.
Use compressed air unit cost →143 / FREE TOOL
Condensate Return Savings Scenario
Use reviewed return and makeup enthalpies to value a stated return mass, with an explicit makeup-water assumption.
Use condensate return savings scenario →144 / FREE TOOL
Cooling Energy Cost
Convert entered useful cooling energy through a matching COP or EER convention to an electrical-energy cost.
Use cooling energy cost →145 / FREE TOOL
Electricity Demand Charge
Compare billed peaks after a supplied ratchet floor over a chosen number of identical billing periods.
Use electricity demand charge →146 / FREE TOOL
Fuel Blend Energy Scenario
Sum two component heat contents on one matching mass or feed-volume basis and report a weighted input value.
Use fuel blend energy scenario →147 / FREE TOOL
Fuel Volume to Energy
Convert a liquid volume to litres, then apply your supplied fuel heat content on its stated gross or net basis.
Use fuel volume to energy →148 / FREE TOOL
Natural Gas Volume to Energy
Apply a supplied gas billing-volume factor and heating value, with explicit energy-unit conventions.
Use natural gas volume to energy →149 / FREE TOOL
Entered Solar Resource Generation Scenario
Build a monthly capacity-times-resource scenario from your supplied peak-sun hours and loss factors, without a weather lookup.
Use entered solar resource generation scenario →150 / FREE TOOL
Solar Self-Consumption Scenario
Calculate direct self-use, import and export inside three matching energy intervals before adding their totals.
Use solar self-consumption scenario →151 / FREE TOOL
Steam Energy Cost
Value a stated steam mass using reviewed steam and feedwater enthalpies, a matching boiler efficiency and an entered fuel rate.
Use steam energy cost →General business
Plan workload, resource use and business tradeoffs with simple models you can inspect and change.
Explore general business calculations →61 / FREE TOOL
Savings Project Simple Payback
Separate annual gross savings from added operating cost and compare the net saving with upfront project cost.
Use savings project simple payback →62 / FREE TOOL
Water Leak Cost
Turn a measured or assumed constant leak rate into volume, avoidable water and sewer charges, and a simple repair recovery ratio.
Use water leak cost →63 / FREE TOOL
Renewable Generation Value
Split entered generation into on-site use and export. Show export income separately from avoided grid purchases.
Use renewable generation value →152 / FREE TOOL
Commercial Water & Sewer Cost
Assemble two water tiers, a separately entered sewer billing quantity, fixed charges and a signed adjustment.
Use commercial water & sewer cost →153 / FREE TOOL
Energy Equipment Life-Cycle Cost
Compare two finite annual cost schedules including one stated replacement and an end-horizon residual value.
Use energy equipment life-cycle cost →154 / FREE TOOL
Oil & Gas Production Value Scenario
Multiply oil and gas quantities by matching prices for one period and subtract only the deductions you enter.
Use oil & gas production value scenario →155 / FREE TOOL
Solar Simple Payback
Calculate annual value from supplied self-use and export quantities, then compare positive net savings with net installed cost.
Use solar simple payback →Manufacturing & operations
Work through production time, process losses, replenishment, logistics and unit costs on a consistent operating basis.
Explore manufacturing & operations calculations →05 / FREE TOOL
Software Total Cost of Ownership
Compare vendor quotes over one to five years, with seat growth, renewals, setup and staff time.
Use software total cost of ownership →08 / FREE TOOL
Billable Rate & Utilization
Turn an annual owner-compensation target, business overhead and profit allowance into an hourly rate, using the hours you expect to invoice.
Use billable rate & utilization →12 / FREE TOOL
Inventory Cover & Reorder Timing
Check on-hand cover and a lead-time reorder point, then size a separate target-fill order using pack multiples and a minimum purchase quantity.
Use inventory cover & reorder timing →18 / FREE TOOL
Dimensional Shipping Weight
Calculate a shipment of identical cartons in centimetres and kilograms. Apply your quoted divisor and weight increment to each carton before totaling.
Use dimensional shipping weight →19 / FREE TOOL
Overall Equipment Effectiveness
Derive availability, performance, quality and OEE from one consistent production period. Enter minutes for the period and seconds for the ideal cycle.
Use overall equipment effectiveness →20 / FREE TOOL
Transport Fuel Cost
Estimate litres and fuel spending from a metric trip distance and entered L/100 km consumption. Add a fixed trip cost and compare whole trip counts.
Use transport fuel cost →43 / FREE TOOL
Annual vs Monthly Subscription
Compare a full one-year subscription commitment with a monthly plan you can stop after the expected whole months of use.
Use annual vs monthly subscription →44 / FREE TOOL
Stockout Contribution Exposure
Estimate demand exposed during a stockout, the share never recovered, and contribution at risk after avoided variable costs.
Use stockout contribution exposure →45 / FREE TOOL
Project Scope-Change Economics
Compare a proposed change price with the additional labor, purchases and delay overhead caused by a defined change.
Use project scope-change economics →46 / FREE TOOL
Freight Density
Calculate total exterior volume and density for identical packed shipping units. This tool stops at physical density and does not assign a freight class.
Use freight density →47 / FREE TOOL
Freight Quote Comparison
Apply two entered base, per-pallet, fuel and accessorial schedules to the same shipment count.
Use freight quote comparison →48 / FREE TOOL
Shipment Cubic Volume
Convert identical carton dimensions in centimeters to cubic meters and compare with a volume-only usable capacity and space allowance.
Use shipment cubic volume →49 / FREE TOOL
First-Pass Yield
Measure first-pass acceptance separately from good output recovered after rework, using mutually exclusive outcomes for one unit cohort.
Use first-pass yield →50 / FREE TOOL
Takt Time & Cycle Capacity
Divide net planned production time by required units, then compare that demand pace with a constant entered cycle time.
Use takt time & cycle capacity →64 / FREE TOOL
Crop Input Cost per Acre
Use your selected kilogram-per-acre input rate and quote to budget whole bags, application and one delivery charge.
Use crop input cost per acre →65 / FREE TOOL
Pure Live Seed Order Cost
Translate your pure-live-seed mass target into bulk seed using lot purity and effective germination, then round to whole bags.
Use pure live seed order cost →86 / FREE TOOL
Batch Completion Time
Estimate whole batches and synchronized parallel waves using one elapsed setup delay and a full cycle for every partial batch.
Use batch completion time →87 / FREE TOOL
Changeover Capacity Loss
Compare whole-unit capacity before and after changeovers in the same scheduled window at one entered operating cycle.
Use changeover capacity loss →88 / FREE TOOL
Production Target vs Actual
Show signed unit variance, target attainment and hourly rates for one consistent production period.
Use production target vs actual →89 / FREE TOOL
Scrap & Rework Cost
Allocate base production cost to scrap and additional cost to recovered units, keeping disposal and salvage visible.
Use scrap & rework cost →90 / FREE TOOL
Hire vs Subcontract Cost
Compare committed paid-hour hiring costs with subcontracted productive hours, while checking the hiring option has enough productive capacity.
Use hire vs subcontract cost →91 / FREE TOOL
Automation Investment Return
Value annual time released, state the share that becomes avoided cash spending, and compare net savings with upfront investment.
Use automation investment return →92 / FREE TOOL
Farm Machine Field Capacity
Use metric operating width, travel speed and an entered in-field efficiency to estimate hectares covered per hour.
Use farm machine field capacity →93 / FREE TOOL
Field Operation Days
Compare area and entered effective machine capacity with daily hours and an assumed number of workable days.
Use field operation days →94 / FREE TOOL
Grain Buyer Net Price
Compare two entered grain bids after per-tonne transport and deductions plus one fixed shipment fee, using the same settlement mass basis.
Use grain buyer net price →96 / FREE TOOL
Hotel Room Performance Metrics
Calculate occupancy, room ADR and RevPAR from a constant available-room count, whole period days and matching stayed-room revenue.
Use hotel room performance metrics →97 / FREE TOOL
Recipe & Portion Cost
Combine entered ingredient, preparation and other batch costs, then allow for unusable portions before comparing with a selling price.
Use recipe & portion cost →100 / FREE TOOL
Welding Shielding-Gas Quantity
Combine arc and pre/post-flow time at an entered flow rate, add a volume allowance and round to whole usable-cylinder quantities.
Use welding shielding-gas quantity →158 / FREE TOOL
Capacity & Opportunity Cost
Compare two simple whole-job priority schedules under a single entered bottleneck and demand limits.
Use capacity & opportunity cost →159 / FREE TOOL
Custom Hire vs Own Equipment
Compare an annual ownership commitment with a per-acre custom quote for the same operation.
Use custom hire vs own equipment →160 / FREE TOOL
Earthmoving Cost per Unit
Allocate productive and standby costs to output in one matched material state.
Use earthmoving cost per unit →161 / FREE TOOL
Farm Machine Ownership & Operating Cost
Separate economic depreciation, average-investment interest and entered hourly operation.
Use farm machine ownership & operating cost →162 / FREE TOOL
Farm Machine Rental Comparison
Compare whole billed rental days and operation costs with an entered total alternative quote.
Use farm machine rental comparison →163 / FREE TOOL
Fertilizer Quantity & Nutrient Cost
Convert a locally reviewed nutrient target into product mass, whole packs and a purchase budget.
Use fertilizer quantity & nutrient cost →164 / FREE TOOL
Grain Drying Cost
Budget a drying event using entered energy use per original wet bushel per moisture point.
Use grain drying cost →165 / FREE TOOL
Grain Storage Cost
Add storage charges, simple inventory interest, handling and an explicit period-loss allowance.
Use grain storage cost →166 / FREE TOOL
Hauling Cost per Metric Tonne
Allocate identical full round-trip hauling costs to delivered metric tonnes.
Use hauling cost per metric tonne →167 / FREE TOOL
Loader & Haul Truck Matching
Balance one loader with a truck fleet using whole loading passes and a declared away cycle.
Use loader & haul truck matching →168 / FREE TOOL
Machining Batch Cost
Spread setup and whole expected-start costs over a required good-part batch.
Use machining batch cost →169 / FREE TOOL
Menu Item Contribution & Mix
Separate two menu items' variable contribution from observed sales mix and entered period fixed cost.
Use menu item contribution & mix →170 / FREE TOOL
On-Farm vs Commercial Grain Storage
Compare one commercial storage event with the entered annual on-farm fixed commitment and event costs.
Use on-farm vs commercial grain storage →171 / FREE TOOL
Pallet Box Capacity
Count a uniform upright box grid with optional base rotation, total-height and gross-weight limits.
Use pallet box capacity →172 / FREE TOOL
Production Capacity
Estimate whole starts and expected good-unit capacity using observed running cycle, availability and yield.
Use production capacity →173 / FREE TOOL
Sell Wet Grain vs Dry & Sell
Compare entered net receipts using theoretical water-only shrink and explicit wet/dry charging bases.
Use sell wet grain vs dry & sell →174 / FREE TOOL
Turning Machining Time
Time repeated identical turning passes from entered constant RPM, feed and travel allowances.
Use turning machining time →175 / FREE TOOL
Weld Filler Consumption
Convert a specified deposited area into filler mass, declared loss allowances and whole packs.
Use weld filler consumption →176 / FREE TOOL
Welding Time & Cost
Separate arc-on time, elapsed crew time and entered consumable costs.
Use welding time & cost →177 / FREE TOOL
Wheel Loader Productivity
Relate loose bucket load, observed active cycle and a separate delay allowance to hourly output.
Use wheel loader productivity →Marketing & sales
Translate campaign, funnel and customer assumptions into unit costs, contribution and bounded growth scenarios.
Explore marketing & sales calculations →15 / FREE TOOL
Advertising ROAS & Profit Return
Turn attributed orders into revenue, contribution and campaign profit. Compare revenue ROAS with a clearly defined profit return and a whole-order break-even target.
Use advertising roas & profit return →36 / FREE TOOL
Campaign Unit-Cost Metrics
Calculate click-through rate, lead conversion and unit costs from one consistent campaign funnel, without turning those counts into a profit claim.
Use campaign unit-cost metrics →37 / FREE TOOL
Conversion Lift Impact
Hold visitor volume constant and compare two assumed conversion rates using contribution per conversion and a one-time implementation cost.
Use conversion lift impact →38 / FREE TOOL
Customer Acquisition Cost
Spread marketing, sales and allocated tools across new paying customers in the same acquisition period or cohort.
Use customer acquisition cost →39 / FREE TOOL
Lead Expected Value
Combine an assumed close rate with customer contribution and a handling cost paid for every lead.
Use lead expected value →40 / FREE TOOL
Maximum Acquisition-Cost Allowance
Estimate the contribution available for acquisition after onboarding and a chosen profit allowance, using an explicit order horizon.
Use maximum acquisition-cost allowance →41 / FREE TOOL
Product Bundle Contribution
Compare identical item quantities sold separately and as a bundle, including packaging added only to the bundle.
Use product bundle contribution →42 / FREE TOOL
Promotion Discount & Required Volume
Calculate the whole promotional units sufficient to preserve baseline contribution after discounting every sale and paying a fixed campaign cost.
Use promotion discount & required volume →81 / FREE TOOL
Customer Retention & Churn
Separate the retained starting cohort from new customers still active at period end. Report customer-count retention and churn together.
Use customer retention & churn →82 / FREE TOOL
Customer Lifetime Contribution
Apply entered monthly churn to a starting customer cohort and compare expected revenue, variable cost and onboarding outlay over a chosen horizon.
Use customer lifetime contribution →83 / FREE TOOL
CAC Payback & Lifetime Ratio
Relate acquisition cost to monthly contribution and an explicitly entered paid-customer horizon, keeping payback separate from revenue.
Use cac payback & lifetime ratio →84 / FREE TOOL
Campaign Budget Scenario
Turn a customer target into whole leads and clicks using your conversion assumptions, then compare sufficient target cost with a strict budget ceiling.
Use campaign budget scenario →85 / FREE TOOL
Marketing Funnel Projection
Apply sequential visit, lead, qualification and sale rates, then extend expected revenue and contribution after campaign costs.
Use marketing funnel projection →156 / FREE TOOL
Free Shipping Threshold Scenario
Find a sufficient basket under an entered product contribution rate after payment, shipping and packaging costs.
Use free shipping threshold scenario →157 / FREE TOOL
Hotel Booking Channel Net Revenue
Compare two channel fee schedules on the same completed stay, with acquisition and variable room-night costs kept separate.
Use hotel booking channel net revenue →Science & engineering
Calculate physical relationships from declared units, measurements and material properties supplied by you.
Explore science & engineering calculations →95 / FREE TOOL
Grain Moisture Shrink
Conserve dry matter when reducing wet-basis moisture, then subtract an explicitly based handling deduction from the theoretical dried mass.
Use grain moisture shrink →98 / FREE TOOL
Cutting Speed & Spindle RPM
Convert an entered surface speed in metres per minute and effective cutting diameter in millimetres into rotational speed.
Use cutting speed & spindle rpm →99 / FREE TOOL
Milling Feed Rate & Travel Time
Multiply entered RPM, effective teeth and chip load, then estimate ideal feed-travel time for a defined path and number of passes.
Use milling feed rate & travel time →116 / FREE TOOL
Flow-Weighted Concentration
Calculate a nonreactive combined concentration from up to three matched stream flows and constituent concentrations. See each stream’s contribution to the total mass rate.
Use flow-weighted concentration →117 / FREE TOOL
Hydraulic Retention Time
Calculate nominal hydraulic retention time from working liquid volume and representative throughflow. Keep the ideal ratio separate from real mixing or treatment performance.
Use hydraulic retention time →118 / FREE TOOL
Wastewater Mass Loading
Estimate a daily constituent mass rate from representative liquid flow and mg/L concentration. Extend the same constant conditions over an entered period.
Use wastewater mass loading →119 / FREE TOOL
Pipe Flow Velocity
Calculate pipe velocity from flow rate and actual internal diameter. Enter L/s, L/min, m³/h or U.S. gpm with mm or inches, and see mean velocity in m/s and ft/s.
Use pipe flow velocity →120 / FREE TOOL
Sensible Heat Energy
Calculate signed ideal heat transfer from mass, an entered specific heat and a temperature change. Keep material energy separate from heater input and losses.
Use sensible heat energy →178 / FREE TOOL
Irrigation Volume, Depth & Runtime
Convert a user-selected net application depth into gross water volume and constant-flow runtime.
Use irrigation volume, depth & runtime →179 / FREE TOOL
Tank Fill & Drain Time
Calculate ideal inventory-change time from simultaneous constant inflow and outflow.
Use tank fill & drain time →193 / FREE TOOL
Boiler Blowdown Energy Scenario
Thermal energy above the makeup state is blowdown kilograms × (blowdown enthalpy − makeup enthalpy) ÷ 3,600, giving kWh from kJ.
Use boiler blowdown energy scenario →194 / FREE TOOL
Cooling Tower Concentration Ratios
Conductivity cycles = circulating conductivity ÷ makeup conductivity.
Use cooling tower concentration ratios →195 / FREE TOOL
Cooling Tower Water Balance
Accounted makeup requirement is the sum of evaporation, blowdown, drift, leakage and overflow during one common period.
Use cooling tower water balance →196 / FREE TOOL
Fan Affinity Law Scenario
Let r be new speed divided by positive reference speed.
Use fan affinity law scenario →197 / FREE TOOL
Fan Air Power
Air power in kW = actual cubic metres per second × pressure rise in Pa ÷ 1,000.
Use fan air power →198 / FREE TOOL
Ideal Flash Steam Fraction
Ideal flash mass fraction = (initial liquid enthalpy − final saturated-liquid enthalpy) ÷ (final saturated-vapor enthalpy − final saturated-liquid enthalpy).
Use ideal flash steam fraction →199 / FREE TOOL
Heat Exchanger Thermal Duty
Signed heat removed in kW = mass flow in kg/s × enthalpy drop in kJ/kg.
Use heat exchanger thermal duty →200 / FREE TOOL
Heat Exchanger LMTD
Counterflow terminal approaches are hot-in minus cold-out and hot-out minus cold-in.
Use heat exchanger lmtd →201 / FREE TOOL
Heat Exchanger UA Scenario
Effective UA in kW/K = entered thermal duty in kW ÷ (applicable correction factor × reviewed LMTD in K).
Use heat exchanger ua scenario →202 / FREE TOOL
Measured Heat Pump COP
Coefficient of performance is useful heating or cooling output divided by electrical input on matching energy and time boundaries.
Use measured heat pump cop →203 / FREE TOOL
Ideal Gas Volume Scenario
The ideal-gas equation is pV = nRT.
Use ideal gas volume scenario →204 / FREE TOOL
Machining Power & Torque
Ideal cutting kW = removal rate in cm³/min × specific cutting force in N/mm² ÷ 60,000.
Use machining power & torque →205 / FREE TOOL
Milling Material Removal Rate
Rectangular-engagement removal rate in cm³/min = axial millimetres × radial millimetres × table feed in mm/min ÷ 1,000.
Use milling material removal rate →206 / FREE TOOL
Pipe Pressure-Drop Scenario
Convert diameter to metres and flow to m³/s.
Use pipe pressure-drop scenario →207 / FREE TOOL
Process Heating Time Scenario
Net thermal power is entered available output minus the coincident loss input.
Use process heating time scenario →208 / FREE TOOL
Process Steam Consumption Scenario
Usable kWh per kilogram = (steam inlet enthalpy − outlet condensate enthalpy) × transfer-effectiveness fraction ÷ 3,600.
Use process steam consumption scenario →209 / FREE TOOL
Pump Affinity Law Scenario
For an ideal fixed-geometry centrifugal-pump similarity scenario, r = new speed / reference speed.
Use pump affinity law scenario →210 / FREE TOOL
Pump Hydraulic Power
Hydraulic kW = fluid density × standard gravity 9.80665 m/s² × flow in m³/s × differential head in metres ÷ 1,000.
Use pump hydraulic power →211 / FREE TOOL
Refinery Stated-Basis Yield Scenario
Main-product yield is main output divided by the explicitly entered qualifying input, multiplied by 100.
Use refinery stated-basis yield scenario →212 / FREE TOOL
Reynolds Number
Dynamic-property mode uses Re = density × velocity × characteristic length ÷ dynamic viscosity.
Use reynolds number →213 / FREE TOOL
Selected-Population Seeding Rate
Bulk seed count per acre = your target plants per acre ÷ [germination fraction × (1 − post-germination stand-loss fraction)].
Use selected-population seeding rate →214 / FREE TOOL
Sludge Retention Time Scenario
Nominal solids retention time in days = solids inventory in kilograms ÷ (external wasted solids + external effluent solids in kg/day).
Use sludge retention time scenario →215 / FREE TOOL
Reviewed Nutrient Rate & Credits
Remaining nutrient rate = max(locally reviewed base rate − the two applicable entered credits, 0).
Use reviewed nutrient rate & credits →216 / FREE TOOL
Solution Dilution Arithmetic
On matching compatible mass-per-volume or molar concentration bases, stock concentration × stock volume = target concentration × final solution volume.
Use solution dilution arithmetic →217 / FREE TOOL
Solution Mass Percentage
Mass percentage = solute mass ÷ total solution mass × 100.
Use solution mass percentage →218 / FREE TOOL
Solution Molarity from Mass
Pure solute grams = entered bulk grams × purity fraction.
Use solution molarity from mass →219 / FREE TOOL
Beam Elastic Stress vs Reviewed Allowable
Axial stress magnitude in MPa is kN × 1,000 ÷ area in mm².
Use beam elastic stress vs reviewed allowable →220 / FREE TOOL
Ideal Cantilever Beam Deflection
The only modeled load/support case is a perfectly fixed cantilever with one concentrated end load and constant E and I.
Use ideal cantilever beam deflection →221 / FREE TOOL
Planar Thermal Conduction
Area-normalized resistance in m²·K/W is the sum of each layer’s thickness in metres divided by conductivity in W/(m·K).
Use planar thermal conduction →222 / FREE TOOL
Treatment Concentration & Mass Removal
Concentration reduction percent = (inlet − outlet concentration) ÷ inlet concentration × 100.
Use treatment concentration & mass removal →223 / FREE TOOL
Turning Material Removal Rate
For the stated turning relation, material removal in cm³/min is surface speed in m/min × depth of cut in mm × feed in mm/revolution.
Use turning material removal rate →224 / FREE TOOL
Wastewater Solids Inventory
Estimated solids kilograms = working liquid volume in m³ × representative concentration in mg/L × 0.001.
Use wastewater solids inventory →Statistics & quality
Summarize samples and process variation while keeping sample size, measurement basis and statistical assumptions visible.
Explore statistics & quality calculations →180 / FREE TOOL
Mean Confidence Interval
Compute a bounded Student-t interval from an independent sample's mean, sample SD and size.
Use mean confidence interval →181 / FREE TOOL
Measurement Uncertainty Budget
Combine three standard uncertainties with signed sensitivity coefficients and one explicit correlation pair.
Use measurement uncertainty budget →182 / FREE TOOL
Measurement Variability
Describe exactly five finite measurements using explicit variance and quartile conventions.
Use measurement variability →183 / FREE TOOL
Process Capability
Calculate Cp and Cpk only when your process study affirms stability and a normal-model basis.
Use process capability →Units & measurement
Convert quantities with explicit unit definitions and any required density, pressure or temperature assumptions.
Explore units & measurement calculations →66 / FREE TOOL
Energy Unit Conversion
Convert an energy quantity between kWh, joules, megajoules, International Table Btu and a declared therm convention. Keep energy separate from power.
Use energy unit conversion →67 / FREE TOOL
Power Conversion
Convert a known power value between watts (W), kilowatts (kW), mechanical horsepower (hp) and Btu IT per hour. Calculating electrical power from volts and amps is a different task that may also need power factor and phase details.
Use power conversion →68 / FREE TOOL
Petroleum Barrel Volume
Convert petroleum barrels, U.S. liquid gallons, liters and cubic meters. The barrel is explicitly 42 U.S. liquid gallons, with no temperature correction.
Use petroleum barrel volume →69 / FREE TOOL
Water Flow Unit Conversion
Convert a steady volumetric flow between liters per minute, liters per second, cubic meters per hour and U.S. gallons per minute.
Use water flow unit conversion →70 / FREE TOOL
Liquid Mass & Volume
Estimate liquid mass from volume, or volume from mass, using your entered density. See liters, cubic meters, kilograms, tonnes and pounds together.
Use liquid mass & volume →184 / FREE TOOL
Cooling Efficiency Unit Converter
Convert equivalent steady-state COP, EER and electrical kW per refrigeration ton on the same rating basis.
Use cooling efficiency unit converter →185 / FREE TOOL
Viscosity Unit Converter
Relate dynamic and kinematic viscosity using density supplied for the same fluid state.
Use viscosity unit converter →Calculators by industry
Find tools that belong to the same work. A calculator has one page and can appear in several collections.
Start with the decision, then check the assumptions
Use consistent units, time periods and cost boundaries. Replace every example price, property or yield with a value that fits your situation. Try a second scenario to see which assumptions drive the result.
The tools calculate entered-assumption scenarios. They do not obtain live quotes, predict demand, recommend investments or certify an engineering design. Each method explains its own limits.