Gage R&R Components
Combine separately estimated repeatability, reproducibility and part variation components.
Gage R&R Components
Browser-only calculations · No input data saved
Worked example results
- Gage R&R sigma
- 1.118034
- Total sigma
- 5.123475
- Gage R&R study variation (%)
- 21.821789
- Gage R&R variance contribution (%)
- 4.761905
- Precision / tolerance (%)
- 16.77051
- Distinct categories (ndc)
- 6
Rounded for display only. Export includes the inputs, results, method and assumptions. Refreshing or leaving the tool clears entered data.
How to use Gage R&R Components
- Load the worked example to see the required input format.
- Combine separately estimated repeatability, reproducibility and part variation components. Use consistent units, periods and definitions.
- Select Calculate, review the assumptions and export the result for your project evidence.
Formula and method
σGRR = √(σrepeat² + σreprod²); σtotal = √(σGRR² + σpart²); %study variation = σGRR/σtotal × 100; ndc = floor(1.41 σpart/σGRR).
Interpretation and assumptions
This is a component-combination helper, not a crossed ANOVA or average-and-range study. Supply standard deviations, not variances. Components must come from a designed measurement-system study with representative parts and operators.
Results support professional judgement. They are not a certification of process stability, a financial commitment or a substitute for study design.
Frequently asked questions
How do I use the gage r&r components?
Combine separately estimated repeatability, reproducibility and part variation components. Load the example first, then replace all inputs with consistent process data and select Calculate. σGRR = √(σrepeat² + σreprod²); σtotal = √(σGRR² + σpart²); %study variation = σGRR/σtotal × 100; ndc = floor(1.41 σpart/σGRR).
What assumptions matter for gage r&r components?
This is a component-combination helper, not a crossed ANOVA or average-and-range study. Supply standard deviations, not variances. Components must come from a designed measurement-system study with representative parts and operators.
Are my calculator inputs saved or sent to a server?
These native calculations run in this browser tab. Inputs are not sent to a server or saved by this calculator. Download the result if you need a record; leaving or refreshing clears the form.