How do you calculate inspection sampling load?

Divide the sample size by the inspector's examination rate to get base minutes, convert to hours, and multiply by the allowance factor. With a 120-piece sample at 12 pieces/min and a 10% allowance, base time is 10 minutes (0.17 hr) and required time is 11 minutes (0.1833 hr).

What is a good inspection rate for garments?

It depends on garment complexity: simple items run well above 12 pieces per minute at a table, while tailored garments with multiple measurement and workmanship checks run far slower. Always use your own measured rate rather than a benchmark.

Does the sample size come from the AQL plan?

Yes. The sample size is set by your lot size and inspection level in the sampling standard (such as ANSI/ASQ Z1.4), and that count is exactly what you enter as the workload.

Why add an allowance to inspection time?

Because inspection is not just looking, it includes un-bagging, measuring, logging defects, and re-checking borderline pieces. A 10% allowance captures those handling and record-keeping losses beyond pure examination.

How does inspection load affect ship dates?

The sample must pass before the lot ships. If required inspection hours push past the QA window, dispatch slips, which is why this figure belongs in the ship-date calculation, not just the QA budget.

Should I inspect 100% instead of sampling?

AQL sampling trades a defined risk for far less labor; 100% inspection multiplies this workload by the whole lot. Reserve full inspection for critical defects or when a sample fails and a lot needs sorting.

Textiles & Apparel Manufacturing calculator

Inspection Sampling Load Calculator

Inspection Sampling Load estimates the labor hours a quality team needs to inspect the sample drawn from a production lot under an AQL sampling plan. QA managers and inspection supervisors in apparel and soft-goods manufacturing use it to staff the inspection table, decide whether a lot can be cleared before its ship window, and size the QA cost of an order. Because sampling inspection sits on the critical path to shipment, a lot cannot be released until its sample passes, underestimating this load delays dispatch and inflates air-freight risk. The calculator converts the sample size, the inspector's real examination rate, and a handling allowance into required inspection hours.

What this calculator does

Estimate inspection sampling load for textiles and apparel manufacturing 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 inspection sampling load in textiles and apparel manufacturing is changing rate or allowance and you want to see the impact.
It computes the labor hours to inspect an AQL sample, including an allowance for handling, measuring, and defect logging.

Formula used

Base inspection sampling load time = inspection sampling load workload ÷ inspection sampling load completion rate
Required inspection sampling load time = base inspection sampling load time × allowance factor
The completion rate is per minute; the result is converted to hours (minutes ÷ 60).

Inputs explained

Garments to inspect in the AQL sample:
Inspector examination rate:
Setup, handling, and record allowance:

How to use the result

Use it when scheduling QA against a lot's ship date, or when staffing the inspection line for an incoming or outgoing sampling check.
It assumes a single examination rate; garments with many measurement points or high defect rates inspect slower because each flaw triggers logging and re-examination the average rate does not capture.

Common questions

How do you calculate inspection sampling load? Divide the sample size by the inspector's examination rate to get base minutes, convert to hours, and multiply by the allowance factor. With a 120-piece sample at 12 pieces/min and a 10% allowance, base time is 10 minutes (0.17 hr) and required time is 11 minutes (0.1833 hr).
What is a good inspection rate for garments? It depends on garment complexity: simple items run well above 12 pieces per minute at a table, while tailored garments with multiple measurement and workmanship checks run far slower. Always use your own measured rate rather than a benchmark.
Does the sample size come from the AQL plan? Yes. The sample size is set by your lot size and inspection level in the sampling standard (such as ANSI/ASQ Z1.4), and that count is exactly what you enter as the workload.
Why add an allowance to inspection time? Because inspection is not just looking, it includes un-bagging, measuring, logging defects, and re-checking borderline pieces. A 10% allowance captures those handling and record-keeping losses beyond pure examination.
How does inspection load affect ship dates? The sample must pass before the lot ships. If required inspection hours push past the QA window, dispatch slips, which is why this figure belongs in the ship-date calculation, not just the QA budget.

Last reviewed 2026-08-11.