OEE Calculator
Separate the losses. See where to start improving. Calculate OEE, MTBF and MTTR from real shift data.
Free, no account needed. Everything runs in your browser; nothing you enter is sent to a server.
Overall equipment effectiveness (OEE)
Set a target for your own product and process. There is no universal target.
Where did the minutes go?
MTBF = run time / failures. MTTR = repair time / failures. With no failures, both metrics are undefined.
The share link includes your input values.
Discuss these results with ASP Dijital
Opens the contact form with a summary you can edit. Nothing is sent until you submit it.
How to use it
- Enter the time base. Take planned production time, run time and ideal cycle time from your line standard.
- Enter the counters. Enter total and good counts from the machine counters.
- Read the losses. See stop-time, speed and quality losses, then download the result as CSV or share it with a link.
Common questions
How is OEE calculated?
OEE = Availability × Performance × Quality. The same result is good count × ideal cycle time / planned production time. All time units must match.
Why can’t performance exceed 100%?
This usually indicates an incorrectly defined ideal cycle time, count or time interval. This tool asks you to correct the inputs instead of silently capping performance at 100%.
Why are stops entered separately?
Not all downtime is repair time. Use actual repair time for MTTR. Minor stops are within run time and must fit alongside the ideal production time.
What is a good OEE value?
There is no universal target. OEE depends on product mix, process and how planned time is defined. Compare a line with its own history and use the loss breakdown to decide what to improve; do not compare plants unless the definitions match.
Planning an IT/OT project?
Describe your machine, data flow or production goal in a few sentences and the ASP Dijital team will reply by email.