Free Engineering Tool #229

OEE Calculator

Calculate Overall Equipment Effectiveness. Enter availability, performance and quality percentages.

OEE = A × P × QWorld-Class 85%Auto-Calc

Results

OEE

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vs World-Class (85%)

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Availability Loss

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Total Losses

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OEE Breakdown

World-class OEE: 85% (Availability 90% × Performance 95% × Quality 99.9%)

OEE measures how effectively equipment is utilized. It combines three factors: availability, performance, and quality.

85% is the benchmark: 90% availability × 95% performance × 99.9% quality = 85.4%.

Availability = (planned time – downtime) / planned time × 100%.

Speed losses: running below rated speed, short stops, idling, and minor stoppages.

Focus on the biggest loss first. Usually availability (reduce breakdowns) gives the fastest improvement.