### Why would you want to do this?

- To see how much the measurement system is contributing to the total variation
- This helps you make an informed decision as to whether you should prioritize:
- Reducing Measurement Variation
- Reducing Process Variation
- Reducing both Measurement Variation and Process Variation
- Doing nothing

### How To Use The Online Calculators

- You will need values for:
- Observed Process Capability Index
- An estimate of Gage R&R – Either:
- Gage R&R as a % of Tolerance (also known as Precision To Tolerance)
- Gage R&R as a % of Process Variation (Note: There are multiple ways of defining Process Variation)

### Calculator #1 – Remove The Impact of Gage R&R (based on Tolerance) To Estimate Actual Process Capability

#### Formula:

### Calculator #2 – Remove The Impact of Gage R&R (based on Process Variation) To Estimate Actual Process Capability

#### Formula:

### Reference:

AIAG Measurement System Analysis 4th Edition – Appendix B – Impact of GRR on the Capability Index Cp