Compare estimated versus actual task hours to measure accuracy.
The ratio of actual to estimated hours reveals the overrun percentage, and scaling the per-task gap by the task count shows the total impact. Tracking estimate accuracy calibrates future planning, since most teams systemically under-estimate by a predictable factor.
Estimation Accuracy
Overrun % = (actual / estimated - 1) x 100
Overrun % = (actual / estimated - 1) x 100 The ratio of actual to estimated hours reveals the overrun percentage, and scaling the per-task gap by the task count shows the total impact.
Tracking estimate accuracy calibrates future planning, since most teams systemically under-estimate by a predictable factor.
This calculator takes 3 inputs: Estimated hours, Actual hours, Tasks estimated. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.