How do you calculate color changeover time?

Divide the impressions you need to run by the press throughput, then multiply by an allowance factor for wash-up and make-ready. With 120 units at 12 units/min and a 10% allowance, base time is 10 hr and required changeover time is 11 hr.

What is a good color changeover time on a flexo press?

For a single ink-station swap on a modern narrow-web flexo press, best-in-class shops target 10-20 minutes of pure changeover using SMED and quick-change anilox and plate sleeves. Longer figures usually mean wash-up and registration are being done serially instead of in parallel.

Why is my changeover time higher than the base run time?

The allowance percentage adds wash-up, ink purge, plate mounting, and registration on top of the raw run time. Here the 10% allowance turns a 10 hr base into 11 hr, so the extra hour is entirely non-value-added setup.

Does changeover time count against OEE?

Yes. Changeover is planned downtime that reduces the availability component of OEE. Cutting the 11 hr result to 9 hr through faster wash-ups directly lifts availability and frees press capacity.

How can I reduce color changeover time?

Apply SMED: pre-stage inks and plates offline, use quick-release anilox sleeves, standardize wash-up sequences, and dedicate stations to common colors. Shaving the allowance from 10% to 5% cuts a 10 hr base run to 10.5 hr instead of 11 hr.

Should light-to-dark color order affect the estimate?

It should. Running light colors before dark reduces the wash-up burden between jobs, which is exactly the allowance term. Poor color sequencing inflates that percentage and pushes the required time up.

Printing, Labels & Industrial Converting calculator

Color Changeover Time Calculator

Color changeover time is the total press time consumed switching from one ink set to the next, including the run itself plus the wash-up, purge, and make-ready overhead that surrounds every color swap. Press schedulers, converting plant managers, and lean/SMED teams use it to slot color changes into a shift and to quote realistic lead times on short-run label and flexo work. On a busy narrow-web press, changeover minutes are pure non-value-added time, so getting this number right is the difference between hitting a delivery date and blowing a shift. It also feeds directly into OEE availability and setup-cost quoting.

What this calculator does

Estimate color changeover time for printing, labels and industrial converting using production-ready inputs so teams can plan labor hours, schedule the work, or check whether the job fits the available shift time.
Use it when color changeover time in printing, labels and industrial converting needs a defensible run time before a quote goes out.
Computes the total press hours a color changeover consumes by dividing the impression volume by throughput and then inflating that base time by a wash-up and make-ready allowance.

Formula used

Base color changeover time = color changeover time workload ÷ color changeover time completion rate
Required color changeover time = base color changeover time × allowance factor

Inputs explained

Impressions to run before the color change:
Press throughput at running speed:
Wash-up, purge, and make-ready allowance:

How to use the result

Use it when planning a run that requires an ink or color-station swap, sizing SMED improvement targets, or quoting jobs with multiple color changes per shift.
It treats the allowance as a flat percentage of run time; in reality wash-up and registration set-up are largely fixed and do not scale with impression count, so very short runs will be underestimated.

Current U.S. benchmarks

The producer price index for paperboard and containers stands at 276.831 (BLS, May 2026), up 8.8% from a year earlier. Quotes priced off last quarter's material cost miss this move.
The U.S. has 22,301 printing and related support establishments employing about 386,248 workers (Census County Business Patterns, 2023).

Common questions

How do you calculate color changeover time? Divide the impressions you need to run by the press throughput, then multiply by an allowance factor for wash-up and make-ready. With 120 units at 12 units/min and a 10% allowance, base time is 10 hr and required changeover time is 11 hr.
What is a good color changeover time on a flexo press? For a single ink-station swap on a modern narrow-web flexo press, best-in-class shops target 10-20 minutes of pure changeover using SMED and quick-change anilox and plate sleeves. Longer figures usually mean wash-up and registration are being done serially instead of in parallel.
Why is my changeover time higher than the base run time? The allowance percentage adds wash-up, ink purge, plate mounting, and registration on top of the raw run time. Here the 10% allowance turns a 10 hr base into 11 hr, so the extra hour is entirely non-value-added setup.
Does changeover time count against OEE? Yes. Changeover is planned downtime that reduces the availability component of OEE. Cutting the 11 hr result to 9 hr through faster wash-ups directly lifts availability and frees press capacity.
How can I reduce color changeover time? Apply SMED: pre-stage inks and plates offline, use quick-release anilox sleeves, standardize wash-up sequences, and dedicate stations to common colors. Shaving the allowance from 10% to 5% cuts a 10 hr base run to 10.5 hr instead of 11 hr.

Last reviewed 2026-05-12.