PCE (Process Cycle Efficiency) is a single-number health check on your value stream. It answers: of all the time an order spends in my process, how much of it is actually producing something the customer would pay for?
The formula
PCE = Value-Add Time / Total Lead Time x 100Benchmarks
- Continuous flow, world-class: 25-30%.
- Discrete batch manufacturing: 5-15%.
- Office / knowledge work: 1-5%.
- Long-tail service work (legal, procurement): often below 1%.
What high PCE means
Not necessarily good. Very high PCE with poor customer outcomes suggests you're either over-processing or moving too fast to catch quality issues. PCE is a lens on flow, not quality.
What low PCE means
Almost always a queue problem. Somewhere in your process, work is sitting still. That's where to focus - not on making the value-add faster.