Process Capability (Cp/Cpk) Calculator
Calculate process capability indices Cp, Cpk, and Cpm from process statistics and specification limits. Determine if your process meets quality requirements.
Inputs
Results
Cp (Potential Capability)
1.67
Cpk (Actual Capability)
1.67
Assessment
Good capability
How to Use This Calculator
- Enter Process Mean (X̄), Process Std Dev (σ), and Upper Spec Limit (USL).
- Set Lower Spec Limit (LSL).
- Review Cp (Potential Capability), Cpk (Actual Capability), and Assessment.
- Use Cpm (Taguchi Index) and Cpu (Upper) to inform your decision.
- Use the chart to visualize the results and explore different scenarios by adjusting inputs.
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