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Manufacturing & whole-unit planning

Production Capacity Calculator

Estimate whole starts and expected good-unit capacity using observed running cycle, availability and yield.

172 / PRODUCTION CAPACITY

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Starting values are illustrative. Use your own costs, rates and assumptions.

INPUT GROUP 01

Entered assumptions and matching units

Check the assumptions before acting on a result.

Read the method and example

YOUR CALCULATION

Plan conservative whole-unit output from a declared schedule and yield.

Whole started-unit capacity per window

1,728

Whole good-unit planning capacity per window

1,641

Whole identical windows required

2

Good capacity minus required units in one window

-1,359

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Saving is optional and stays on this device. Unsaved edits are not kept when you leave. CSV includes every input and the current results.

Illustrative inputs loaded. Replace them with your own assumptions.

How the production capacity calculator works

Pool scheduled time across equal machines, multiply by availability and divide by productive-running cycle time. Floor total starts, then multiply by expected good yield and floor again for a whole-unit planning count.

Required identical production windows equal demand divided by good capacity, rounded upward. Positive demand at zero capacity has no finite count. The observed cycle already includes running-speed effects; do not apply them again.

This is pooled deterministic capacity, not separate machine dispatch or a stochastic accepted-unit guarantee. Availability and yield apply once. Scheduling constraints, correlated failures, queues and staffing must be reviewed separately.

Worked example

Eight hours on two machines at 90% availability and a 30-second cycle allows 1,728 starts. At 95% good yield, floor(1,641.6) gives 1,641 good units; 3,000 units need two windows. Four-hour windows have capacity 820 and need four windows.

Sources and assumptions

The source material explains the underlying calculation or pricing structure. Entered prices, costs, schedules and scenario choices are your assumptions; this tool does not obtain supplier quotes or predict actual results.

  • First-Pass Yield

    Measure first-pass acceptance separately from good output recovered after rework, using mutually exclusive outcomes for one unit cohort.

  • 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.

  • Production Target vs Actual

    Show signed unit variance, target attainment and hourly rates for one consistent production period.

  • Changeover Capacity Loss

    Compare whole-unit capacity before and after changeovers in the same scheduled window at one entered operating cycle.

Calculation methods, testing and sources · Practical calculation guides