Defects per unit (DPU)

Defects per unit (DPU) is one of the simplest units to measure your defect rate.

  • DPU = Total Defect / Total Number of Units
  • Example:
    • Consider a bank form that has to be filled up.
    • There are 100 customers that have filled up this form
    • And out of the 100 forms that have been filled up, 2 defects (in this case errors) have been identified.
    • It may so happen that a few forms have more than 1 defect and a few forms do not have any defect.
    • So DPU = 2/100 = 0.02

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