What this calculator does
PM compliance = PM work orders completed within the allowed window ÷ PM work orders due × 100. It protects the due-date integrity of the PM program.
Inputs and formula
Use matching work-order and labor records for one stated reporting period; the formula and boundary are defined on this page.
When to use it
Use it for preventive work only. Schedule compliance instead evaluates all work orders committed to a schedule, including planned corrective work.
Worked example and interpretation
108 of 120 PMs completed by their due date or documented grace window gives 90%. Investigate late PMs by asset criticality and failure consequence.
Practical notes and limitations
Do not silently extend due dates or remove PMs after they become due. A high result cannot prove that PM task content, intervals, or completion quality are effective.