OEE & Factory Performance worked example

Changeover Loss for OEE with changeovers in the period of 6 changeovers: a worked example

This worked example runs the changeover loss for oee numbers for a tougher week than the baseline: changeovers in the period of 6 changeovers instead of the typical 12 changeovers. Quantify changeover time as an OEE availability loss for OEE & Factory Performance — total lost hours and the percentage of planned time.

The inputs for this scenario

  • Changeovers in the period: 6 changeovers (the input this scenario stresses; the baseline uses 12)
  • Average changeover time: 35 min (held at the documented default)
  • Planned production time: 9,600 min (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Changeover loss = changeovers × average changeover time.
  • Changeover loss works out to 3.5 hr at these inputs, and this is the headline figure for the scenario.
  • Availability loss works out to 2.19 % of planned at these inputs.
  • Changeover time works out to 210 min at these inputs.
  • Changeovers works out to 6 changeovers at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where changeovers in the period sits at 12 changeovers and the headline result is 7 hr, this scenario comes in 50% below the baseline at 3.5 hr.
  • Use it when planning a high-mix schedule or scoping a SMED project, to quantify how much capacity changeovers are eating before and after improvement. 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

  • Changeover loss: 3.5 hr (headline result)
  • Availability loss: 2.19 % of planned
  • Changeover time: 210 min
  • Changeovers: 6 changeovers

Run it with your numbers

  • To rerun this with your own numbers, open the live Changeover Loss for OEE calculator, set changeovers in the period to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.