Does verification time belong in a changeover measurement?

Yes. Lean practice clocks a changeover from the last good part of the previous run to the first good part of the next. First-off checks and adjustments sit inside that window, so measure them with the swap.

How do I set a realistic step completion rate?

Time a trial changeover with the crew that will run it, then divide the step count by the minutes it takes. Include tool handovers, but not breaks or waiting for parts.

Can two technicians halve the changeover time?

Only the work that truly splits. Fixture release, calibration and first-off approval often follow one another, and two people in one cell can work around each other. Time a two-person trial before assuming half.

What does the share of shift row tell me?

It shows the fraction of the scheduled shift one changeover absorbs. At 22.5 minutes in a 480 minute shift it is about 4.7%, so several changeovers a shift add up quickly.

Robotics & Automation calculator

Robot Changeover Time Calculator

Estimate how long a robot cell changeover takes from its steps and the pace the crew works, with an allowance for verification and first-off parts. The result is judged against the target time and the shift you enter.

What this calculator does

Changeover minutes for a robot cell from its step count, step pace and verification allowance, checked against the target time you enter.

Formula used

Base minutes = changeover steps ÷ steps per minute
Verification allowance minutes = base minutes × verification allowance ÷ 100
Changeover time = base minutes + verification allowance minutes
Share of shift = changeover time ÷ shift length × 100; margin to target = target − changeover time

Inputs explained

Changeover Steps: Tool, recipe, fixture and vision steps completed at the cell.
Step Completion Rate: Steps your crew finishes per minute during a typical changeover.
Verification and First-Off Allowance: Extra time for verification checks and first-off approval, as a percentage.
Shift Length: Scheduled cell minutes the changeover competes against.
Target Changeover Time: Changeover minutes your schedule allows; the warning limit.

How to use the result

Best suited to planning a mixed-model robot cell schedule, setting a SMED target for changeover, comparing fixtures for setup speed.
Parallel work by two technicians can shorten the clock time without cutting steps; this page has no parallel crew input. Steps vary in difficulty, so a single average pace hides the slowest one; time a trial run before committing.

Current U.S. benchmarks

Global copper trades at $13,543 per tonne (IMF via FRED, Jul 2026), up 38.6% in a year, and U.S. industrial electricity averages 9.77 cents per kWh. Both feed electrified-hardware unit economics.

Common questions

Does verification time belong in a changeover measurement? Yes. Lean practice clocks a changeover from the last good part of the previous run to the first good part of the next. First-off checks and adjustments sit inside that window, so measure them with the swap.
How do I set a realistic step completion rate? Time a trial changeover with the crew that will run it, then divide the step count by the minutes it takes. Include tool handovers, but not breaks or waiting for parts.
Can two technicians halve the changeover time? Only the work that truly splits. Fixture release, calibration and first-off approval often follow one another, and two people in one cell can work around each other. Time a two-person trial before assuming half.
What does the share of shift row tell me? It shows the fraction of the scheduled shift one changeover absorbs. At 22.5 minutes in a 480 minute shift it is about 4.7%, so several changeovers a shift add up quickly.

Last reviewed 2026-10-01.