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Availability And Performance Rate Calculator

Work out availability and performance rate instantly with clear inputs, formula shown and shareable results.

About Availability And Performance Rate Calculator

Availability is run time as a percentage of planned production time, capturing breakdowns and unplanned stops. Performance is actual output against what the ideal cycle time would have produced in that run time, capturing minor stops and reduced speed. Together with quality rate they multiply to give OEE.

Formulas

Availability

Availability % = (planned time - downtime) x 100 / planned time

Performance

Performance % = units x ideal cycle time x 100 / run time

Worked example

With the default values below, Availability And Performance Rate Calculator returns Availability of 88.54%. Change any input above and every figure here is recalculated in your browser.

Inputs used

Planned Production Timeminimum 0.01 minutes
480 minutes
Unplanned Downtimeminimum 0 minutes
55 minutes
Total Units Producedminimum 0
5,800
Ideal Cycle Timeminimum 0.001 seconds
4 seconds

Results

Availability
88.54%
Performance Rate
90.98%
Actual Run Time
425.00
Units Possible In Run Time
6,375

Step by step

  1. 1Values used
  2. 2Availability
  3. 3Performance
  4. 4Availability= 88.54
  5. 5Performance Rate= 90.98
  6. 6Actual Run Time= 425.00
  7. 7Units Possible In Run Time= 6,375

Assumptions and limits

  • The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

What are world-class figures?

Around 90% availability, 95% performance and 99% quality, giving an OEE near 85%. Discrete manufacturing typically sits at 60-70% OEE.

Why is performance often the hidden loss?

Micro-stops of a few seconds and running slightly below rated speed rarely get logged, yet together they commonly cost more than recorded breakdowns.

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