Understanding Changeover Time
How we calculate. Average = sum of changeover durations ÷ number of changeovers. The form uses the same arithmetic as the worked examples on this page. See our methodology and accuracy policy.
Real-world scenario: A typical Changeover Time case uses total changeover time 360 and changeovers 12. Enter the same figures below to reproduce the worked path.
What is Changeover Time?
A flexibility KPI for mixed-model lines. SMED programs aim to cut internal setup while keeping quality on the first good piece.
- Start/end clocks per SMED policy
- Same unit for total time
- Segment by line/SKU family
The Formula
Worked Example
Common Use Cases
- SMED projects: baseline setup
- Schedule design: changeover load
- OEE losses: planned stop time
Pro Tips
- Separate internal vs external setup
- Don’t hide first-piece scrap
- Track by changeover type
Limitations: Changeover Time results are educational manufacturing and lean/TPM planning aids—not process-safety, quality-system, or financial advice. Confirm definitions with your MES/SCADA and quality policies.
FAQ
Last-good to first-good?
That is the common SMED window. If you use a different clock, label reports so teams stay consistent.
What if changeovers is 0?
Average changeover is undefined—enter at least one changeover.
Authoritative References
For OEE and manufacturing KPI definitions, consult: