DPPM Six Sigma Conversion Table

DPPM stands for Defect Parts Per Million in six sigma metric conversion. DPPM conversion is most commonly used in manufacturing sector. DPPM is often used when assessing the defect rate of a continuous material. The following table will convert Defects Parts Per Million to a short term or long term process sigma level.

Defects Parts Per Million Six Sigma Chart

DPM and Process Sigma Table
DPM Short-Term
Process Sigma
st)
Long-Term
Process Sigma
lt)
Yield
2 6.0 4.5 99.99966
5 5.9 4.4 99.99954
9 5.8 4.3 99.99915
13 5.7 4.2 99.9987
21 5.6 4.1 99.9979
32 5.5 4.0 99.9968
48 5.4 3.9 99.995
72 5.3 3.8 99.993
108 5.2 3.7 99.989
159 5.1 3.6 99.984
233 5.0 3.5 99.98
337 4.9 3.4 99.97
483 4.8 3.3 99.95
687 4.7 3.2 99.93
968 4.6 3.1 99.90
1,350 4.5 3.0 99.87
1,866 4.4 2.9 99.81
2,555 4.3 2.8 99.74
3,467 4.2 2.7 99.65
4.661 4.1 2.6 99.5
6,210 4.0 2.5 99.4
8,198 3.9 2.4 99.2
10,724 3.8 2.3 98.9
13,903 3.7 2.2 98.6
17,864 3.6 2.1 98.2
22,750 3.5 2.0 97.7
28,716 3.4 1.9 97.1
35,930 3.3 1.8 96.4
44,565 3.2 1.7 95.5
54,799 3.1 1.6 94.5
66,807 3.0 1.5 93.3
80,757 2.9 1.4 91.9
96,801 2.8 1.3 90.3
115,070 2.7 1.2 88.5
135,666 2.6 1.1 86.4
158,655 2.5 1.0 84.1
184,060 2.4 0.9 81.6
211,855 2.3 0.8 78.8
241,964 2.2 0.7 75.8
274,253 2.1 0.6 72.6
308,538 2.0 0.5 69.1
344,578 1.9 0.4 65.5
382,089 1.8 0.3 61.8
420,740 1.7 0.2 57.9
460,172 1.6 0.1 54.0
500,000 1.5 0.0 50.0
539,828 1.4 -0.1 46.0
579,260 1.3 -0.2 42.1
617,911 1.2 -0.3 38.2
655,422 1.1 -0.4 34.5
691,462 1.0 -0.5 30.9
725,747 0.9 -0.6 27.4
758,036 0.8 -0.7 24.2
788,145 0.7 -0.8 21.2
815,940 0.6 -0.9 18.4
841,345 0.5 -1.0 15.9
864,334 0.4 -1.1 13.6
884,930 0.3 -1.2 11.5
903,199 0.2 -1.3 9.7
919,243 0.1 -1.4 8.1
933,193 0.0 -1.5 6.7

DPPM - The Defects Parts Per Million is calculated by dividing the number of defective parts divided by the number of used parts multiplied by 1,000,000.


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