Production calculator
OEE Calculator
Measure how much planned production time turns into good parts at the expected rate.
What this calculator does
- Calculate availability, performance, quality, and overall equipment effectiveness.
- Use when a machine or line needs a reliable effectiveness score.
- Calculates availability, performance, quality, and OEE for a machine, conveyorized cell, or full production line.
Formula used
- Availability = run time ÷ planned time
- Performance = ideal cycle × total count ÷ run time
- Quality = good count ÷ total count
- OEE = availability × performance × quality
Inputs explained
- Planned production time: undefined
- Downtime: undefined
- Ideal cycle time: undefined
- Total count: undefined
- Good count: undefined
How to use the result
- Use it during shift reviews, loss-tree meetings, and improvement work when downtime, speed loss, and rejects all affect output.
- OEE depends on a valid ideal cycle and clean downtime and count definitions; inconsistent counters can make the score misleading.
Common questions
- What is the OEE calculator for? It turns planned time, downtime, ideal cycle time, total count, and good count into availability, performance, quality, and overall equipment effectiveness.
- What information do I need before using it? Use the planned production minutes, downtime minutes, ideal cycle time in seconds per unit, total units counted, and good units accepted.
- How should I use the OEE result? Use the three component scores to decide whether the next improvement should target downtime, speed loss, or quality/reject losses.
- When is OEE only an estimate? It is only an estimate if downtime categories overlap, the ideal cycle is not proven, or total and good counts come from different points on the line.
Last reviewed 2026-05-12.