OEE & Factory Performance calculator
Throughput Gap Calculator
Throughput gap measures the difference between the throughput a process can supply and the throughput the schedule actually requires. Production planners and operations managers use it to spot whether a cell, line, or station is a help or a constraint before committing to a build plan. A positive gap means you have headroom to absorb demand swings or rush orders; a negative gap means you are already short and will miss the schedule unless something changes. It turns a vague feeling that 'we might be tight this week' into a concrete number of units of slack or shortfall.
What this calculator does
- Calculate throughput gap between required and actual output.
- Use it when throughput gap in oee and factory performance needs a clean margin number for a oee and factory performance go / no-go review.
- It computes the difference between available throughput and required throughput, reporting both the unit gap and the margin against the reference amount.
Formula used
- Margin = gain or available amount - cost or required amount
Inputs explained
- Demonstrated capacity: Best proven sustainable rate.
- Actual throughput: Current achieved rate.
- Reference capacity: Basis to express the gap against.
How to use the result
- Use it during weekly capacity planning or when quoting a new order to check whether existing throughput can absorb the load.
- It compares steady-state numbers and ignores variability, so a positive average gap can still mask short-term shortfalls during demand spikes.
Current U.S. benchmarks
- U.S. manufacturing runs at 75.6% of capacity (Federal Reserve, May 2026). New factory orders are up 2.3% year over year (Census).
Common questions
- How do you calculate a throughput gap? Subtract required throughput from available throughput. With 125 units available and 100 required, the gap is 25 units of surplus — a 25% margin over what is needed.
- What does a positive throughput gap mean? It means you can supply more than the schedule demands. The 25-unit surplus in the example is buffer you can use for rush orders, variability, or planned maintenance downtime.
- What does a negative throughput gap mean? Available throughput is below required throughput, so you will miss the schedule without overtime, added shifts, or offloading work elsewhere.
- What is throughput gap margin? It expresses the gap as a percentage of the reference amount. A 25-unit gap on a 100-unit reference is a 25% margin, which is healthy headroom for most lines.
- Is throughput gap the same as a bottleneck analysis? No. Throughput gap tells you whether total capacity meets demand; bottleneck analysis tells you which station limits that capacity. Use them together.
Last reviewed 2026-05-12.