Six Sigma Calculator

Enter your data points, and specification limits to calculate the Six Sigma Level (Z-score) and DPMO (Defects per Million Opportunities).

Enter Data Points (comma-separated):

Enter Upper Specification Limit (USL):

Enter Lower Specification Limit (LSL):

Enter Number of Defects (optional for DPMO):

Enter Number of Units (optional for DPMO):

Enter Opportunities per Unit (optional for DPMO):