OEE & Factory Performance worked example

Availability Calculator with operating time of 210 hr: a worked example

This worked example runs the availability calculator numbers for a tougher week than the baseline: operating time of 210 hr instead of the typical 420 hr. Calculate availability for OEE & Factory Performance — the share of planned production time the equipment was actually running.

The inputs for this scenario

  • Operating (run) time: 210 hr (the input this scenario stresses; the baseline uses 420)
  • Planned production time: 480 hr (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Availability = operating time ÷ planned production time.
  • Availability works out to 43.75 % at these inputs, and this is the headline figure for the scenario.
  • Operating time works out to 210 hr at these inputs.
  • Planned production time works out to 480 hr at these inputs.
  • Downtime works out to 270 hr at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where operating time sits at 420 hr and the headline result is 87.5 %, this scenario comes in 50% below the baseline at 43.75 %.
  • Use it at the end of a shift, day, or week to quantify how much scheduled time was lost to stoppages before rolling it into a full OEE figure. 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

  • Availability: 43.75 % (headline result)
  • Operating time: 210 hr
  • Planned production time: 480 hr
  • Downtime: 270 hr

Run it with your numbers

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

Last reviewed 2026-05-12.