Cpk Calculator


In statistics, process capability index (Cpk) is very helpful for measuring the capability of a specific process to deliver its outcome as per the overall specification.

The process capability index is calculated with the help of this below formula:

Process Capability Index Formula

In the below online process capability index calculator, enter the upper specification limit, lower specification limit, standard deviation and mean in the respective input boxes and then click calculate to find out the output.


Upper Specification Limit (USL):
Lower Specification Limit (LSL):
Standard Deviation (σ):
Mean (μ):
Process Capability Index (Cpk):






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