Measures the number of defects or quality issues found per unit of production.

What it Measures ?

How many faulty products are made.

Relevant StakeHolders 

Quality Control Team, Line Supervisors

Why it Matters ?

Tracks defect levels in production output.

In-depth Use Case / Real-world Example

Defect Density helps track the quality of the production process by quantifying defects relative to the production volume. If a factory produces 10,000 units and identifies 100 defects, the defect density is 1%. Lower defect density indicates a higher level of product quality and better manufacturing processes. High defect density may point to problems with machinery, materials, or worker training, prompting the need for corrective actions. Reducing defect density improves customer satisfaction, minimizes waste, and lowers the cost of rework.