OEE Calculator Calculator
Compute OEE from availability, performance, and quality to expose hidden capacity and downtime losses.
Using this calculator responsibly
The OEE Calculator calculator is an engineering aid for checking a shop-floor estimate before a setup, quote, or process review. Enter values in the units shown, confirm material properties against the applicable specification, and keep a record of the assumptions used. Calculator output does not override machine capacity, tooling limits, part requirements, or a qualified engineer's approval.
Before using a result in production, repeat the calculation with the extreme values allowed by the print or process window. Check that the selected material, thickness, geometry, and safety factor reflect the actual job. If a result approaches a press, die, fastener, or machine limit, stop and verify it with the equipment manufacturer or responsible engineer.
Inputs and results
Read every field label before entering data and avoid mixing inch and metric values. A useful result should be traceable to the job number, revision, material certification, and machine or tooling record. Treat warnings, invalid ranges, and unusual outputs as reasons to inspect the inputs rather than as values to work around.
OEE multiplies three loss buckets — availability (uptime), performance (speed), and quality (good parts) — into one number that exposes hidden capacity.
Formula: OEE = Availability × Performance × Quality
Worked example
- Availability 90%, performance 95%, quality 99%.
- OEE = 0.90 × 0.95 × 0.99 ≈ 0.846 → 84.6%.