Quality engineering / Measurement system analysis

Check whether your measurement system can separate real part variation.

Enter a crossed Gage R&R study and review %GRR, repeatability, reproducibility, part-to-part variation, %Tolerance, and ndc using the Average & Range method.

Open the calculator See a worked example

Runs locally in your browser2–10 parts supportedAverage & Range methodImmediate interpretation

MSA · AIAG AVERAGE & RANGE METHOD

Gage R&R Calculator

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Enter your crossed Gage R&R study data below. This runs the standard Average & Range method entirely in your browser — nothing is uploaded. For the full reasoning behind acceptance (not just the number), see the worked example.

Study setup

Number of parts

Number of appraisers

Trials per part

Tolerance (USL − LSL), optional

Supports 2–10 parts, 2–3 appraisers, 2–3 trials — the range of configurations the Average & Range method's published constants directly cover.

Measurement data

Result

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—%

%GRR of tolerance

%GRR (study var.)

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ndc

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% Part-to-part

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% Tolerance

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Repeatability (EV)

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Reproducibility (AV)

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Part variation (PV)

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Enter data and press Calculate to see the read on this measurement system.