How do you calculate rewash rate?

Divide rewash pounds by total processed pounds and multiply by 100. With 950 rewash pounds out of 52,000 processed, that is 950 / 52,000 x 100 = 1.83%.

What is a good rewash rate for an industrial laundry?

Best-in-class shops run under 1%, and most healthy operations sit between 1% and 3%. The example here at 1.83% is acceptable but above a tight 1.5% target.

Why is my rewash rate climbing?

The usual causes are under-dosed or wrong wash formulas, poor soil classification, overloaded tunnel modules, dropped wash temperatures, or worn press extraction. Trend by classification to isolate the offender.

Should I measure rewash in pounds or pieces?

Tunnel and washer-extractor plants usually measure in pounds because production is weighed; flatwork and garment shops sometimes use pieces. Use whichever matches how you meter total throughput so the ratio is consistent.

What does the rewash gap to target mean?

It is your actual rate minus your target. A negative gap, like the -0.33 points in the example, means you beat the target; a positive number means you are over and rework is eroding capacity.

How much does rewash actually cost?

A rewashed pound roughly doubles its variable processing cost. At 0.42 per pound variable, 950 rewash pounds add about 400 dollars in avoidable cost per cycle plus the lost tunnel time.

Industrial Laundry, Uniform & Textile Rental Operations calculator

Industrial Laundry Rewash Rate Calculator

Rewash rate is the share of laundry that fails final inspection and has to run through the wash cycle a second time, expressed as a percentage of total processed pounds or pieces. Plant managers and quality leads in uniform rental and industrial laundry operations track it because every rewashed pound burns water, gas, chemistry, labor, and tunnel capacity twice while delivering zero billable output. A creeping rewash rate is usually the first signal that a wash formula, classification process, or soil-sort step has drifted. Keeping it visible on the production board is one of the cheapest ways to protect both gross margin and on-time delivery.

What this calculator does

Calculate rewash percentage from pounds or pieces sent back to wash, total processed volume, and the target rewash rate.
Useful for washroom leads and quality managers tracking stains, odor, soil carryover, and reject loads that force extra wash passes.
It divides rework poundage by total processed poundage to give the percentage of production that required a second wash, then compares that to your quality target.

Formula used

Rewash rate = rewash pounds or pieces ÷ total processed pounds or pieces × 100
Rewash gap to target = rewash rate - target rewash percentage

Inputs explained

Rework pounds sent back for rewash:
Total clean pounds processed this period:
Target rewash rate ceiling:

How to use the result

Use it daily or per shift to monitor wash quality, and weekly to trend whether formula or classification changes are helping.
It treats every rewashed pound equally, so a few heavily soiled mats can look the same as widespread light-soil misses unless you segment by classification.

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 rewash rate? Divide rewash pounds by total processed pounds and multiply by 100. With 950 rewash pounds out of 52,000 processed, that is 950 / 52,000 x 100 = 1.83%.
What is a good rewash rate for an industrial laundry? Best-in-class shops run under 1%, and most healthy operations sit between 1% and 3%. The example here at 1.83% is acceptable but above a tight 1.5% target.
Why is my rewash rate climbing? The usual causes are under-dosed or wrong wash formulas, poor soil classification, overloaded tunnel modules, dropped wash temperatures, or worn press extraction. Trend by classification to isolate the offender.
Should I measure rewash in pounds or pieces? Tunnel and washer-extractor plants usually measure in pounds because production is weighed; flatwork and garment shops sometimes use pieces. Use whichever matches how you meter total throughput so the ratio is consistent.
What does the rewash gap to target mean? It is your actual rate minus your target. A negative gap, like the -0.33 points in the example, means you beat the target; a positive number means you are over and rework is eroding capacity.

Last reviewed 2026-05-12.