43 FREE TOOLS
Accounting & finance
Compare pricing, cash timing, funding and financial performance using figures on a consistent reporting basis.
Explore accounting & finance →CASE & CONTRAST / FREE CALCULATORS
Free calculators for business & industry.
Practical calculators with the method beside the result. Bring your measurements, costs and assumptions. Compare your options and see what changes when you change the numbers.
No signup. Optional saves stay on your device. Download your inputs and results as CSV.
What are you calculating?
Start with a subject, then choose the specific calculation you need.
26 FREE TOOLS
Construction & materials
Estimate quantities, whole-package purchases and supplier costs from your actual dimensions, product yields and quotes.
Explore construction & materials →7 FREE TOOLS
Economics
Explore how price, quantity, discounting and changing assumptions affect a simplified economic scenario.
Explore economics →25 FREE TOOLS
Energy & utilities
Compare consumption, tariffs, efficiency and operating costs with explicit input-energy and useful-output boundaries.
Explore energy & utilities →7 FREE TOOLS
General business
Plan workload, resource use and business tradeoffs with simple models you can inspect and change.
Explore general business →48 FREE TOOLS
Manufacturing & operations
Work through production time, process losses, replenishment, logistics and unit costs on a consistent operating basis.
Explore manufacturing & operations →15 FREE TOOLS
Marketing & sales
Translate campaign, funnel and customer assumptions into unit costs, contribution and bounded growth scenarios.
Explore marketing & sales →42 FREE TOOLS
Science & engineering
Calculate physical relationships from declared units, measurements and material properties supplied by you.
Explore science & engineering →4 FREE TOOLS
Statistics & quality
Summarize samples and process variation while keeping sample size, measurement basis and statistical assumptions visible.
Explore statistics & quality →7 FREE TOOLS
Units & measurement
Convert quantities with explicit unit definitions and any required density, pressure or temperature assumptions.
Explore units & measurement →Choose a useful starting point
Show the assumptions. Keep the method.
Every calculator includes an original worked example and explains its units, rounding and scope. Example prices and physical properties are illustrative. Replace them with measurements, quotes and values appropriate to your situation.
Case tools help you examine a scenario. They do not predict customer behavior, select engineering limits or establish that an option is suitable for a particular job.
Read our calculation and source policy →Sales battlecards and competitive deal support
Case & Contrast also offers source-linked battlecards and deal briefs for vertical SaaS teams facing a named competitor. The existing service, samples and free template remain available.
The $500 Competitive Deal Kit covers one competitor and one live opportunity. The ongoing Deal Desk is $2,750 per month. Scope and delivery terms are described on the service page.
Request a Competitive Deal Kit
Tell us the company, named competitor and timing. Fit is confirmed before invoice. Do not include confidential deal details.