OEE & Factory Performance worked example

OEE Calculator at 66% performance: a worked example

This worked example runs the oee calculator numbers for a tougher week than the baseline: 66% performance instead of the typical 92%. Calculate overall equipment effectiveness from availability, performance, and quality factors.

The inputs for this scenario

  • Operating (run) time: 420 min (held at the documented default)
  • Planned production time: 480 min (held at the documented default)
  • Performance: 66 % (the input this scenario stresses; the baseline uses 92)
  • Quality (first-pass yield): 98 % (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: OEE = availability × performance factor × quality factor.
  • Effective OEE availability works out to 56.6 % at these inputs, and this is the headline figure for the scenario.
  • Base availability works out to 87.5 % at these inputs.
  • OEE performance factor works out to 66 % at these inputs.
  • OEE quality factor works out to 98 % at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where performance sits at 92% and the headline result is 78.89 %, this scenario comes in 28.26% below the baseline at 56.6 %.
  • Use it on any machine, line, or cell, per shift or per day, to benchmark effectiveness and locate the dominant loss. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Effective OEE availability: 56.6 % (headline result)
  • Base availability: 87.5 %
  • OEE performance factor: 66 %
  • OEE quality factor: 98 %

Run it with your numbers

  • To rerun this with your own numbers, open the live OEE Calculator calculator, set performance to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.