DPMO Calculator - Defects Per Million Opportunities

Your details

Forward mode: enter defects, units and opportunities. Reverse modes: start from a known DPMO or sigma level.
Total number of defects found in the sample.
Total number of units, items, or transactions inspected.
How many distinct ways a defect can occur in a single unit. For example, a form with 5 fields has 5 opportunities.
Used to compute Rolled Throughput Yield (RTY). RTY = yield ^ steps. Leave at 1 if you want the single-step yield only.
steps
DPMOGood (4 sigma)
4,800

Defects per million opportunities

Sigma level4.09sigma
Process yield0.9952%
DPU0.024
Rolled throughput yield (RTY)0.9952%
Defect rate0.0048%
Total opportunities2,500
4.09 sigma
Poor<2Below avg2-3Average3-4Good4-5Excellent5-6World class6+

Your process is at 4.09 sigma - good quality, typical of many mature manufacturing processes.

  • Your process produces 4800.00 defects per million opportunities (99.5200% defect-free).
  • To reach Six Sigma (3.4 DPMO), your defect rate needs to drop 99.9% from its current level.
  • Each additional sigma level roughly halves the DPMO, so even small sigma improvements translate to large defect reductions in high-volume processes.

Next stepRun a DMAIC project targeting the highest-frequency defect types to push toward 5 sigma.

 = Powered by OnlyCalculators