OEE Calculator (Overall Equipment Effectiveness)
Calculate OEE = Availability × Performance × Quality. World-class ≥ 85%. Enter planned time, actual run time, ideal cycle time, and part counts.
How to Use the OEE Calculator
- Enter the planned production time (min) — e.g. shift length.
- Enter the actual run time excluding planned stoppages.
- Enter ideal cycle time (min/part), total parts produced, and good parts.
Use Cases
- •Monitoring production line effectiveness.
- •Identifying losses in a lean manufacturing programme.
- •Benchmarking equipment performance across shifts and plants.
Formula
OEE = Availability × Performance × Quality. Availability = Actual Run Time / Planned Time. Performance = (Ideal Cycle Time × Parts) / Actual Run Time. Quality = Good Parts / Total Parts.
Frequently Asked Questions
What is OEE?
OEE (Overall Equipment Effectiveness) is the standard productivity metric in lean manufacturing. World-class performance is ≥ 85%.
What do the three OEE components measure?
Availability captures downtime losses, Performance captures speed losses, and Quality captures defect losses. Multiplying all three gives OEE.
Why is 85% considered world-class OEE?
85% is the widely accepted world-class benchmark. Industry average is around 60%. Even small OEE improvements significantly increase output.