The Pp and Ppk Calculator helps you assess the potential and actual performance of your process. Use it to understand process variation and centering relative to specification limits, crucial for quality improvement and manufacturing excellence. Improve your production efficiency today!
Formula:
The formulas for Pp and Ppk are:
- Process Performance (Pp):
Pp = (USL - LSL) / (6 × σoverall) - Process Performance Index (Ppk):
Ppk = min[ (USL - μ) / (3 × σoverall), (μ - LSL) / (3 × σoverall) ]
Where:
- USL: Upper Specification Limit
- LSL: Lower Specification Limit
- μ (mu): Process Mean
- σoverall (sigma overall): Overall Process Standard Deviation