Defect Rate Calculator

A product is usually said to be defective when it doesn't satisfy the predefined set of specifications. Defect rate is the percentage of product that failed to meet the quality target and is used to assess procedures, services and business products. So, there arises a common question in the manufacturing industry 'How to calculate a defect rate'. Here is an online Defect rate calculator to calculate the defective rate percentage based on the total observed products and defective product (s).

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A product is usually said to be defective when it doesn't satisfy the predefined set of specifications. Defect rate is the percentage of product that failed to meet the quality target and is used to assess procedures, services and business products. So, there arises a common question in the manufacturing industry 'How to calculate a defect rate'. Here is an online Defect rate calculator to calculate the defective rate percentage based on the total observed products and defective product (s).

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Formula:

r = (p / o) × 100 Where, r = Defect rate p = Defective products o = Total observed products

Example:

What will be the defective rate, if 20 out of 100 observed products is found to be defected?

Solution:

r = (20 / 100) × 100
= 20 %


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