OEE Calculator

Overall Equipment Effectiveness (OEE) is the share of planned production time spent making good units at full speed. It multiplies three factors: availability, performance and quality. Enter figures for one machine or line over a shift, day or week. Nothing you type is sent anywhere unless you ask us to email the result.

Production data

Planned production time (minutes) Shift time minus planned breaks. One 8-hour shift is 480. Downtime (minutes) Breakdowns, changeovers, waiting for material. Ideal cycle time (seconds per unit) The fastest the machine or line can make one unit. Total units made (units) Everything made, good and rejected. Good units (units) Units right first time, without rework.

Your OEE

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OEE

Enter all five figures to see your OEE.

Availability

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Run time ÷ planned production time

Performance

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(Ideal cycle time × total units) ÷ run time

Quality

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Good units ÷ total units

• Good units at ideal speed
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• Quality loss
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• Speed loss
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• Downtime
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How OEE is calculated

Run time

Planned production time − downtime

Availability

Run time ÷ planned production time

Performance

(Ideal cycle time × total units) ÷ run time

Quality

Good units ÷ total units

OEE

Availability × Performance × Quality, which is the same as (good units × ideal cycle time) ÷ planned production time