How do you calculate scrap and rework cost?

Multiply affected weight by cost per pound by the capture-factor scope to get the variable cost, then add fixed adders. For 180 lb at $7.80/lb, 100% scope, plus $260 in adders, the total is $1,664, or $9.24 per sellable unit.

What does the capture factor represent?

It scales how much of the affected weight is truly lost. At 100% the whole 180 lb is written off; at, say, 60% you might recover or downgrade the rest, so only 60% carries the full cost. It lets you model partial recovery.

Should I rework or scrap an off-spec lot?

Compare the rework path's total cost — including the labor, testing, and disposal adders here — against the scrap path plus replacement production. If reworking 180 lb costs $1,664 but a fresh batch costs more, rework wins; otherwise scrap.

Why include fixed adders separately from the per-pound cost?

Because disposal fees, retest lab charges, and rework labor don't scale neatly with pounds. Breaking out the $260 adder keeps the per-pound product value clean and makes the overhead of each incident visible.

What is cost per sellable unit and why does it matter?

It is total scrap cost divided by the good units the run should have yielded — here $9.24 per piece. It converts a batch-level loss into a per-unit hit you can compare against margin to see how much profit a defect erases.

What is a good scrap and rework cost target?

Lower is better, but the real benchmark is cost of poor quality as a percent of revenue — many food plants target under 2-3%. Track this figure by defect mode so the few recurring causes driving most of the dollars stand out.

Coffee, Tea, Roasting & Dry Goods Processing calculator

Scrap/Rework Cost Calculator

Scrap and rework cost puts a dollar figure on a bad batch — over-roasted coffee, off-spec tea, contaminated or mislabeled dry goods — combining the variable cost of the affected product with the fixed labor, testing, and disposal it triggers. Quality managers and plant controllers use it to size the true cost of a defect, prioritize root-cause projects, and decide whether reworking is cheaper than scrapping. The figure separates the product value lost from the overhead the incident drags in, and expresses it per sellable unit so it can be compared across runs. On a thin-margin commodity like coffee, a single recurring scrap mode can quietly eat a product line's profit.

What this calculator does

Estimate scrap or rework cost from affected product weight, cost per pound, affected scope, and fixed rework or disposal costs.
costing rejected or reworked coffee, tea, and dry goods batches
It computes total scrap/rework cost by multiplying affected product weight, cost per pound, and capture-factor scope to get the variable cost, then adding the fixed labor, testing, and disposal adders.

Formula used

Variable scrap/rework cost = scrap or rework product weight × cost per affected pound × affected product scope
Total scrap/rework cost = variable scrap/rework cost + rework labor, testing, and disposal adders

Inputs explained

Scrap or rework product weight:
Cost per affected pound:
Affected product scope (capture factor):
Rework labor, testing, and disposal adders:

How to use the result

Use it when costing a specific defect event, building a cost-of-poor-quality case, or comparing rework against outright scrap for an off-spec lot.
It captures direct costs but not the downstream value of lost capacity, expedite fees, or customer goodwill, so for a stockout-driving defect the real cost is higher than this figure.

Common questions

How do you calculate scrap and rework cost? Multiply affected weight by cost per pound by the capture-factor scope to get the variable cost, then add fixed adders. For 180 lb at $7.80/lb, 100% scope, plus $260 in adders, the total is $1,664, or $9.24 per sellable unit.
What does the capture factor represent? It scales how much of the affected weight is truly lost. At 100% the whole 180 lb is written off; at, say, 60% you might recover or downgrade the rest, so only 60% carries the full cost. It lets you model partial recovery.
Should I rework or scrap an off-spec lot? Compare the rework path's total cost — including the labor, testing, and disposal adders here — against the scrap path plus replacement production. If reworking 180 lb costs $1,664 but a fresh batch costs more, rework wins; otherwise scrap.
Why include fixed adders separately from the per-pound cost? Because disposal fees, retest lab charges, and rework labor don't scale neatly with pounds. Breaking out the $260 adder keeps the per-pound product value clean and makes the overhead of each incident visible.
What is cost per sellable unit and why does it matter? It is total scrap cost divided by the good units the run should have yielded — here $9.24 per piece. It converts a batch-level loss into a per-unit hit you can compare against margin to see how much profit a defect erases.

Last reviewed 2026-05-12.