Free tool · OEE

OEE calculator

Enter the numbers from one shift or run. Everything is computed in your browser — nothing is sent unless you choose to email yourself the result.

Your shift

Scheduled time the line was meant to run, in minutes (e.g. an 8 h shift = 480).
Total unplanned stop time in minutes — breakdowns, changeovers, starving, blocking.
The fastest sustainable time to make one good piece, in seconds.
All pieces produced (good + bad).
Scrap + rework.

Your OEE

world-class is 85% · typical discrete plant ≈ 60%
Availability run ÷ planned
Performance speed vs ideal
Quality good ÷ total

Reference figures — not a decision. This is arithmetic on the shift numbers you typed: it describes that shift, not your line, and it cannot see why the losses happened. Before acting on it, have the numbers and the conclusion reviewed by whoever is competent for the process. Terms.

Email my result + the free guide

Get your OEE breakdown and our plain-English guide “Simulation & the money it finds” — how a line simulation turns productivity into profit, with the financial-return math worked out. Free.

No spam. We use it to send your result and, occasionally, useful line-improvement tips.