Lean & Planning

OEE Calculator

Calculate Overall Equipment Effectiveness by breaking performance down into Availability, Performance and Quality — so you know exactly where the losses are hiding.

Formulas

Availability = Run Time ÷ Planned Time
Performance = (Units × Cycle Time) ÷ Run Time
Quality = Good Units ÷ Total Units
OEE = A × P × Q

Enter your values

Time — use the same unit for all time fields (e.g. minutes)

Planned production time Total time the machine was scheduled to run Enter a valid planned time (greater than 0).

Run time Actual operating time after unplanned stops Enter a valid run time (greater than 0, no more than planned time).

Units

Total units produced All units including defective ones Enter a valid total units value (greater than 0).

Good units produced Units meeting quality standard first time Enter a valid good units value (no more than total units).

Speed

Ideal cycle time The fastest possible time to produce one unit — in the same unit as your time fields above Enter a valid ideal cycle time (greater than 0).

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Ready to calculate

Fill in your time, unit, and cycle time values on the left and press Calculate to see your OEE breakdown.

Overall Equipment Effectiveness

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OEE

0% 40% poor 60% typical 85% world class 100%

Availability

—

Run time ÷ Planned time

Performance

—

Speed vs. ideal rate

Quality

—

Good ÷ Total units

What this means

How it works

Understanding OEE

Availability

Measures time losses caused by unplanned stops — breakdowns, changeovers, or waiting. Run time divided by planned production time. World class is above 90%.

Performance

Measures speed losses — slow cycles and minor stops that reduce output below the ideal rate. Ideal cycle time multiplied by total units, divided by run time. World class is above 95%.

Quality

Measures quality losses — units that fail to meet standard on the first pass. Good units divided by total units. World class is above 99.9%. OEE = A × P × Q.