Ormaven · Quality calculator
Cp & Cpk Calculator
Calculate process capability in seconds and see which specification side is limiting your Cpk.
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Cp—
Cpk—
Cpu—
Cpl—
Capability signal
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Calculated from the values above.
Who it is for
Quality engineers, manufacturing teams and anyone who needs a quick capability check from known summary statistics.
What you get
Cp, Cpk, upper and lower capability indices, plus a concise interpretation of the limiting side.
Use a stable process and a meaningful estimate of standard deviation. Capability thresholds depend on customer, industry and risk context; this calculator does not replace a statistical study or customer-specific requirement.