How do you calculate schedule attainment?

Divide actual units by planned units and express as a percent. Producing 2,110 against a plan of 2,400 gives 2,110 ÷ 2,400 = 87.9% schedule attainment.

What is a good schedule attainment percentage?

World-class operations target 95% or higher with low variability. The 87.9% in this example signals a meaningful miss worth investigating, especially since 2.4 lost hours account for 312 units of the shortfall.

What does adjusted attainment mean here?

Adjusted attainment adds back the units lost to downtime to show what the line would have hit without that lost time. Here it reaches 100.9%, meaning the plan itself was achievable and the 2.4 hours of downtime caused the miss.

Schedule attainment vs. OEE — how do they differ?

Attainment measures output against a specific plan, while OEE measures equipment effectiveness against theoretical best regardless of plan. A line can hit 100% attainment with mediocre OEE if the plan was conservative.

How do I convert lost hours into lost units?

Multiply lost hours by the standard output rate. At 130 units/hr, 2.4 lost hours equals 312 units of lost capacity — larger than the 290-unit output gap, confirming downtime fully explains the miss.

Why is my output gap smaller than my lost capacity?

It means the line was running faster than standard when up, or recovered some loss. Here the 290-unit gap is less than 312 units of lost capacity, so the running pace partially offset the downtime.

Production calculator

Production Schedule Attainment Calculator

Schedule attainment is the percentage of the planned production schedule a line actually completed in a given period — the single number that tells operations whether the plan was hit. Production supervisors and plant managers track it daily because it links directly to on-time delivery and exposes whether misses come from the plan being unrealistic or from the floor losing time. This calculator goes beyond the raw ratio: it quantifies the output gap in units and translates lost hours into the units those hours could have produced, so you can see how much of the miss was downtime versus planning error.

What this calculator does

Compare planned output against actual output and estimate the schedule miss from lost time.
Use in daily management reviews to separate demand misses from downtime and execution losses.
It computes the ratio of actual to planned units and translates lost downtime hours into equivalent missing units.

Formula used

Schedule attainment = actual units ÷ planned units
Output gap = planned units − actual units
Lost capacity = lost hours × standard output rate

Inputs explained

Planned units: undefined
Actual units: undefined
Lost production time: undefined
Standard output rate: undefined

How to use the result

Use it at end of shift or end of day to score plan performance and separate downtime losses from underlying planning gaps.
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.

Current U.S. benchmarks

The U.S. has 21,668 machinery manufacturing establishments employing about 1,086,146 workers (Census County Business Patterns, 2023).

Common questions

How do you calculate schedule attainment? Divide actual units by planned units and express as a percent. Producing 2,110 against a plan of 2,400 gives 2,110 ÷ 2,400 = 87.9% schedule attainment.
What is a good schedule attainment percentage? World-class operations target 95% or higher with low variability. The 87.9% in this example signals a meaningful miss worth investigating, especially since 2.4 lost hours account for 312 units of the shortfall.
What does adjusted attainment mean here? Adjusted attainment adds back the units lost to downtime to show what the line would have hit without that lost time. Here it reaches 100.9%, meaning the plan itself was achievable and the 2.4 hours of downtime caused the miss.
Schedule attainment vs. OEE — how do they differ? Attainment measures output against a specific plan, while OEE measures equipment effectiveness against theoretical best regardless of plan. A line can hit 100% attainment with mediocre OEE if the plan was conservative.
How do I convert lost hours into lost units? Multiply lost hours by the standard output rate. At 130 units/hr, 2.4 lost hours equals 312 units of lost capacity — larger than the 290-unit output gap, confirming downtime fully explains the miss.

Last reviewed 2026-05-12.