Six Sigma Calculator

Six Sigma Level Calculator

Measure and improve your process performance with our advanced calculator

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Six Sigma Calculator

Total number of units evaluated
Possible defects per unit
Total defects found across all units

Your Results

DPO

0.000000

Defects Per Opportunity

DPMO

0.00

Defects Per Million Opportunities

Sigma Level

0.00

Process Sigma

Performance

Average

Process Quality

Sigma Level Visualization
1σ (Poor) 3σ (Average) 6σ (World Class)

What is Six Sigma?

Six Sigma is a data-driven approach and methodology for quality control that aims to reduce defects to a statistically insignificant level - just 3.4 defects per million opportunities (DPMO).

It's widely adopted across industries for its structured approach to process improvement and operational excellence.

Learn More

How to Use This Calculator

  1. Enter the total number of units evaluated
  2. Enter the number of defect opportunities per unit
  3. Enter the total number of defects found
  4. Click "Calculate Sigma Level"
  5. Review your results and process performance

Understanding Your Results

  • DPO: Defects Per Opportunity - average defects per chance
  • DPMO: Defects Per Million Opportunities - standardized metric
  • Sigma Level: Process capability (1-6σ)
  • Performance: Overall process quality rating

➤ Use the Calculator to Compute Your DPM

Frequently Asked Questions

What is Six Sigma and why is it called the 6th Sigma?
Six Sigma refers to the sixth standard deviation (sigma) in a normal distribution. A process that achieves Six Sigma quality produces only 3.4 defects per million opportunities, making it extremely reliable. It emphasizes data collection, analysis, and measurable improvements.
What is the Lean Six Sigma Green Belt training program?
The Lean Six Sigma Green Belt training program equips professionals with tools to lead and implement improvement projects. It's ideal for mid-level managers or team leaders who need hands-on experience in problem-solving, process analysis, and project management.
How does Lean Management and Six Sigma work together?
Lean management focuses on eliminating waste, while Six Sigma targets variation reduction. Together, they form a powerful approach that combines speed and quality, making businesses more agile and competitive.
What industries are implementing Lean Six Sigma?
Industries including manufacturing, healthcare, IT, finance, and government are adopting Lean Six Sigma to reduce costs, improve safety, and boost customer satisfaction.
What is VOC in Six Sigma?
VOC stands for Voice of the Customer, a crucial part of Six Sigma used to gather customer needs and expectations. VOC data guides improvements in products, services, and internal processes.
What is Six Sigma automation?
Six Sigma automation integrates process improvement tools with technology (e.g., robotics, AI) to streamline workflows, reduce errors, and boost speed - especially in supply chains.