DPMO Calculator

Formula

The formula to calculate the Defects Per Million Opportunities (DPMO) is:

\[ DPMO = 1000000 \times \frac{D}{U \times O} \]

Where:

\(DPMO\) is the defects per million opportunities
\(D\) is the number of defects
\(U\) is the number of units
\(O\) is the number of opportunities per unit

DPMO Definition

DPMO stands for defects per million opportunities. In manufacturing, it’s a measure of how many defects would occur in a lot of goods with 1 million opportunities. It’s important to understand that it’s 1 million opportunities and not 1 million units, although they could be equal. This is because units often have more than one point of failure or opportunity for failure.

Example Calculation

Let's assume the following values:

Number of Defects (D) = 50
Number of Units (U) = 1000
Opportunities per Unit (O) = 10

Using the formula to calculate the DPMO:

\[ DPMO = 1000000 \times \frac{50}{1000 \times 10} = 5000 \]

The DPMO is 5000.