Six Sigma Metrics Calculator
Convert defect counts into DPU, DPO, DPMO and an explicitly selected sigma convention.
Six Sigma Metrics Calculator
Browser-only calculations · No input data saved
Worked example results
- DPU
- 0.12
- DPO
- 0.024
- DPMO
- 24,000
- Opportunity yield (%)
- 97.6
- Sigma level (selected shift)
- 3.477368
Rounded for display only. Export includes the inputs, results, method and assumptions. Refreshing or leaving the tool clears entered data.
Original advanced tool & legacy export options
The original migrated on-site tool is retained below so existing features, industry samples and legacy exports remain available. It is a local page, not another Base44 app. Its older scoring conventions may differ from the transparent native helper above.
How to use Six Sigma Metrics Calculator
- Load the worked example to see the required input format.
- Convert defect counts into DPU, DPO, DPMO and an explicitly selected sigma convention. Use consistent units, periods and definitions.
- Select Calculate, review the assumptions and export the result for your project evidence.
Formula and method
DPU = defects / units; DPO = defects / (units × opportunities); DPMO = DPO × 1,000,000; sigma = Φ⁻¹(1 − DPO) + shift.
Interpretation and assumptions
Defects are not the same as defective units. Opportunity yield is not unit first-pass yield. Sigma is inverse normal of 1 − DPO plus the selected shift; zero observed defects does not establish infinite true capability. Define opportunities consistently.
Results support professional judgement. They are not a certification of process stability, a financial commitment or a substitute for study design.
Frequently asked questions
How does six sigma metrics calculator work?
Convert defect counts into DPU, DPO, DPMO and an explicitly selected sigma convention. DPU = defects / units; DPO = defects / (units × opportunities); DPMO = DPO × 1,000,000; sigma = Φ⁻¹(1 − DPO) + shift.
What assumptions matter for dpmo & sigma level?
Defects are not the same as defective units. Opportunity yield is not unit first-pass yield. Sigma is inverse normal of 1 − DPO plus the selected shift; zero observed defects does not establish infinite true capability. Define opportunities consistently.
Are my calculator inputs saved or sent to a server?
These native calculations run in this browser tab. Inputs are not sent to a server or saved by this calculator. Download the result if you need a record; leaving or refreshing clears the form.