How do you calculate mean time between stops?

Divide total run time by the number of stops, then multiply by your normalization factor. With 420 hours, 14 stops, and a factor of 1, that is 420 / 14 x 1 = 30 hours between stops.

What is the difference between mean time between stops and MTBF?

MTBF counts only failures or breakdowns. Mean time between stops counts every interruption including changeovers and minor jams, so it is usually a smaller, more sensitive number reflecting overall flow.

What is a good mean time between stops?

There is no universal target; it depends on cycle time and product mix. The useful signal is the trend. If 30 hours climbs over successive weeks your line is stabilizing; if it falls, stoppages are becoming more frequent.

Should I include planned stops like changeovers?

That depends on your goal. Include all stops to measure raw flow stability; exclude planned ones if you only want unplanned interruptions. Be consistent so the trend stays comparable.

What is the normalization factor for?

It rescales the result to other units or to a reference period, for example converting hours to shifts. Left at 1, the output stays in the same time units as your run-time input.

How does this relate to OEE?

Frequent stops crush the availability pillar of OEE even when each stop is short. A longer mean time between stops generally lifts availability and throughput.

OEE & Factory Performance calculator

Mean Time Between Stops Calculator

Mean Time Between Stops is the average length of an uninterrupted production run, found by spreading total run time across every stop a line takes. Unlike MTBF, which focuses on breakdowns, this counts all stops including minor stoppages, changeovers, and micro-jams, so it is a sharper lens on flow stability. Line leads and reliability engineers use it to see how often a process is interrupted, since frequent short stops quietly devastate OEE availability. A rising figure means longer clean runs; a falling one signals creeping instability.

What this calculator does

Calculate mean time between stops for OEE & Factory Performance from run time and the number of stoppages.
Use it to size minor-stop and reliability problems in OEE & Factory Performance.
It divides total run time by the number of stops, then applies a normalization factor, to give the average run length between interruptions.

Formula used

Mean time between stops = total run time ÷ number of stops × normalization factor

Inputs explained

Total run time: Hours the equipment ran during the period.
Number of stops: Count of stoppages (planned and unplanned) during run time.
Normalization factor: Leave at 1; only change to rescale the result.

How to use the result

Use it to quantify flow stability on a line dominated by short stops and minor stoppages, or to track whether reliability work is lengthening clean runs.
It is an average, so a handful of long runs can mask many micro-stops; pair it with a stop-count or Pareto view to see the full picture.

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 mean time between stops? Divide total run time by the number of stops, then multiply by your normalization factor. With 420 hours, 14 stops, and a factor of 1, that is 420 / 14 x 1 = 30 hours between stops.
What is the difference between mean time between stops and MTBF? MTBF counts only failures or breakdowns. Mean time between stops counts every interruption including changeovers and minor jams, so it is usually a smaller, more sensitive number reflecting overall flow.
What is a good mean time between stops? There is no universal target; it depends on cycle time and product mix. The useful signal is the trend. If 30 hours climbs over successive weeks your line is stabilizing; if it falls, stoppages are becoming more frequent.
Should I include planned stops like changeovers? That depends on your goal. Include all stops to measure raw flow stability; exclude planned ones if you only want unplanned interruptions. Be consistent so the trend stays comparable.
What is the normalization factor for? It rescales the result to other units or to a reference period, for example converting hours to shifts. Left at 1, the output stays in the same time units as your run-time input.

Last reviewed 2026-05-12.