First Pass Yield Calculator

Use one process, asset or item scope, reporting period, cutoff, measurement unit, and written classification rule across both values. Every unit uses the same first-pass acceptance rule. Rerun, repair, retest, and offline correction are excluded from the numerator. Reconcile the numerator to the eligible denominator rather than combining separately filtered reports. A changed population can move the percentage even when underlying operations did not change.

The rate describes one process step before correction; it is not final yield, scrap rate, or multi-stage rolled yield. Compare periods or targets prepared from the same rules, not an assumed universal benchmark. Product mix, sampling, schedule changes, reporting delay, exclusions, automation, and event granularity can move the value. Review absolute observations and reason-level evidence beside the percentage before deciding on corrective work.

No. This calculator applies disclosed arithmetic to values you supply; it is not an audit, quality release, maintenance authorization, supplier ruling, forecast, or process certification. Changing the inspection point, defect rule, or rework classification breaks comparability. Retain source records, version the metric definition, test late-arriving events, and obtain accountable review before using the result for incentives, acceptance, or contractual action.