How do you calculate microstop loss?

Multiply units lost to microstops by their value, then add idle labor and restart adders. Here 260 units x $4.25 = $1,105, plus $340 labor and $180 restart adders = $1,625 per period.

What is the cost per unit lost to microstops?

Divide total loss by lost units. In the example $1,625 / 260 = $6.25 per lost unit, higher than the $4.25 throughput value because labor and restart adders load onto each lost unit.

What counts as a microstop?

A short, often unlogged stoppage, typically under a minute: a jam, misfeed, sensor fault, or brief starvation. Individually trivial, but the 260 units lost here show how they compound across a period.

Why are microstops worse than they look?

They rarely get recorded, so they hide in the gap between scheduled and actual output. At $1,625 per period the loss is real, but because no single stop is big enough to log, it escapes attention until totaled like this.

How do microstops affect OEE?

They cut the performance and availability components of OEE through small speed losses and brief stops. The 260 units lost here would otherwise count toward output, so eliminating them lifts OEE directly.

Microstop loss vs andon cost, what's the difference?

Andon cost prices one acknowledged event you respond to. Microstop loss aggregates many tiny, often unacknowledged stops over a period. Microstops are death by a thousand cuts; andon is a single visible wound.

Conveyors calculator

Microstop Loss Calculator

Microstop Loss totals what frequent short stoppages cost a conveyor line over a period by combining lost-unit value, the labor paid during those stops, and the scrap or adjustment needed to restart. Reliability and continuous-improvement engineers use it because microstops, the sub-minute jams, misfeeds, and sensor faults that rarely get logged, are the most underreported drain on OEE. They matter precisely because each one looks trivial: a few seconds here and there feels free, but across a shift they accumulate into hundreds of lost units and real restart scrap. Putting a period dollar figure on them turns an ignored nuisance into a fundable improvement target.

What this calculator does

Estimate the cost of repeated short conveyor or machine stops from lost units, value, labor, and scrap adders.
a continuous improvement team needs to quantify the impact of short stops, jams, and resets
It sums the period cost of microstops from lost-unit value, idle labor, and restart adders, then divides by lost units for a per-unit cost.

Formula used

Microstop loss cost = lost units × value per unit + labor cost + restart adders
Cost per lost unit = microstop loss cost ÷ lost units

Inputs explained

Units lost to microstops:
Value per lost microstop unit:
Labor cost during microstops:
Restart scrap or adjustment adders:

How to use the result

Use it when prioritizing reliability projects or quantifying the OEE drag of unlogged short stoppages on a line.
Microstop unit counts are often estimated rather than logged; the result is only as accurate as your loss estimate, so validate with a short observation study.

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 microstop loss? Multiply units lost to microstops by their value, then add idle labor and restart adders. Here 260 units x $4.25 = $1,105, plus $340 labor and $180 restart adders = $1,625 per period.
What is the cost per unit lost to microstops? Divide total loss by lost units. In the example $1,625 / 260 = $6.25 per lost unit, higher than the $4.25 throughput value because labor and restart adders load onto each lost unit.
What counts as a microstop? A short, often unlogged stoppage, typically under a minute: a jam, misfeed, sensor fault, or brief starvation. Individually trivial, but the 260 units lost here show how they compound across a period.
Why are microstops worse than they look? They rarely get recorded, so they hide in the gap between scheduled and actual output. At $1,625 per period the loss is real, but because no single stop is big enough to log, it escapes attention until totaled like this.
How do microstops affect OEE? They cut the performance and availability components of OEE through small speed losses and brief stops. The 260 units lost here would otherwise count toward output, so eliminating them lifts OEE directly.

Last reviewed 2026-05-12.