Production worked example

Schedule Attainment with planned units of 6,000 units: a worked example in production

What does the result look like when planned units reaches 6,000 units? The full calculation is worked below with real intermediate numbers. Use in daily management reviews to separate demand misses from downtime and execution losses.

The inputs for this scenario

  • Planned units: 6,000 units (raised for this scenario; the documented default is 2,400)
  • Actual units: 2,110 units (unchanged)
  • Lost production time: 2.4 hr (unchanged)
  • Standard output rate: 130 units / hr (unchanged)

Working through the calculation

  • Applying the documented formula (Schedule attainment = actual units รท planned units) to the inputs above produces each figure below.
  • At this operating point the engine returns 35.17 % for schedule attainment, the number this scenario is built around.
  • At this operating point the engine returns 3,890 units for output gap.
  • At this operating point the engine returns 312 units for lost capacity.
  • At this operating point the engine returns 40.37 % for adjusted attainment.

How this compares with the baseline

  • Against the tool's baseline example, where planned units sits at 2,400 units and the headline result is 87.92 %, this scenario comes in 60% below the baseline at 35.17 %.
  • A figure at this level is achievable when planned units is genuinely sustained, not just peaked for a shift. It treats the standard output rate as constant; mix changes, slow running, or ramp-up mean lost hours may not convert one-to-one into the units shown.

Results at a glance

  • Schedule attainment: 35.17 % (headline result)
  • Output gap: 3,890 units
  • Lost capacity: 312 units
  • Adjusted attainment: 40.37 %

Run it with your numbers

  • Every input above is editable in the live Schedule Attainment calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.