Quality Hold Incidence Rate Calculator

Use one process, asset or item scope, reporting period, cutoff, measurement unit, and written classification rule across both values. Each reviewed lot is counted once even if it receives several hold records. Administrative holds, reopened holds, transfers, and split lots use explicit treatment. 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.

This is lot-level hold incidence, not nonconforming-unit rate, hold duration, material value, severity, or final rejection rate. 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. A hold is a control state, not proof of defect or authorization to release, reject, rework, or dispose of material. 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.