Process Capability Index Formula

Equation for calculate process capability index is,

$$C_{\mathrm{pm}}=\frac{C_p}{\sqrt{1+{\left(\frac{\mu -T}{\sigma }\right)}^2}}$$

where,
C_p = process capability index,
μ = estimated mean of the process,
T = target process mean,
σ = standard deviation,
C_pm = process capability index