01
Cost of Quality Calculator method
Cost of good quality is prevention plus appraisal. Cost of poor quality is internal plus external failure. Their sum is total cost of quality for the declared scope.
CalculatorsFREE · NO SIGNUP
Cost of Quality Calculator
Total prevention, appraisal, internal failure and external failure costs for one scope. See the cost of good quality, cost of poor quality and share of matched sales without inventing avoided losses.
FREE TO USEA LOOK ATLAS TOOL
01 USE IT NOW02 NO ACCOUNT03 FIELD NOTES BELOW
WORKING INPUTS
Use one matched scope.
LIVE RESULT
Total cost of quality
$3,000.00FOUR-CATEGORY QUALITY LEDGERCOST OF GOOD QUALITY$2,000.00
COST OF POOR QUALITY$1,000.00
SHARE OF MATCHED SALES30.00%
FAILURE SHARE OF QUALITY COST33.33%
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THE CATEGORY EXPLAINS THE COST
Separate prevention from the failures it is meant to reduce
A quality ledger becomes useful when inspection, scrap and customer failures occupy separate categories. Adding them does not prove that any expense could be eliminated.
WORKING VIEW
$3,000.00 quality cost$2,000 GOOD · $1,000 POOR
METHODPrevention + appraisal + internal failure + external failure
WORKING NOTEThe four categories total $3,000, or 30% of the matched $10,000 sales.
INPUTS → CLEAR OUTPUT
THE FIELD NOTES
Quick answer above. Better decisions below.
Use the result now, then read the practical notes for assumptions, examples, limitations, and the choices behind it.
$2,000 GOOD · $1,000 POOR$3,000.00 quality cost
The four categories total $3,000, or 30% of the matched $10,000 sales.
02
Keep the source values in view
Classify each expense once, keep reporting periods and currency aligned, and compare the sum with matched sales. The ledger does not assign costs automatically or count the same return twice.
03
Use the output in your workflow
Reconcile product costs with the cogs calculator and avoid adding the same scrap or return twice. Use the contribution margin calculator to review matched variable costs and sales separately from this quality ledger.
04
Read the declared limits
The result is a recorded-cost breakdown, not guaranteed savings, an audit, a failure forecast or a recommendation to reduce inspection. No universal target percentage is applied.
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Cost of Quality Calculator method
Cost of good quality is prevention plus appraisal. Cost of poor quality is internal plus external failure. Their sum is total cost of quality for the declared scope.
Keep the source values in view
Classify each expense once, keep reporting periods and currency aligned, and compare the sum with matched sales. The ledger does not assign costs automatically or count the same return twice.
Use the output in your workflow
Reconcile product costs with the cogs calculator and avoid adding the same scrap or return twice. Use the contribution margin calculator to review matched variable costs and sales separately from this quality ledger.
Read the declared limits
The result is a recorded-cost breakdown, not guaranteed savings, an audit, a failure forecast or a recommendation to reduce inspection. No universal target percentage is applied.
Questions, answered.
How does the cost of quality calculator work?
Cost of good quality is prevention plus appraisal. Cost of poor quality is internal plus external failure. Their sum is total cost of quality for the declared scope.
What should I check before using the output?
Classify each expense once, keep reporting periods and currency aligned, and compare the sum with matched sales. The ledger does not assign costs automatically or count the same return twice.
What does this tool leave out?
The result is a recorded-cost breakdown, not guaranteed savings, an audit, a failure forecast or a recommendation to reduce inspection. No universal target percentage is applied.
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