Textiles & Apparel Manufacturing worked example

Wash Shrinkage Rate at 68% right-first-time pass target: a worked example

This worked example runs the wash shrinkage rate numbers for a tougher week than the baseline: 68% right-first-time pass target instead of the typical 95%. Estimate wash shrinkage rate for textiles and apparel manufacturing using production-ready inputs so teams can track KPI performance and decide whether corrective action is needed.

The inputs for this scenario

  • Garments failing wash shrinkage tolerance: 8 count (held at the documented default)
  • Garments in the wash test lot: 250 count (held at the documented default)
  • Right-first-time pass target: 68 % (the input this scenario stresses; the baseline uses 95)

Working through the calculation

  • The calculation starts from the formula this tool documents: Wash shrinkage rate = wash shrinkage rate count ÷ total wash shrinkage rate population × 100.
  • Wash shrinkage rate works out to 3.2 % at these inputs, and this is the headline figure for the scenario.
  • Wash shrinkage rate gap to target works out to 64.8 points at these inputs.
  • Wash shrinkage rate count works out to 8 count at these inputs.
  • Total wash shrinkage rate population works out to 250 count at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where right-first-time pass target sits at 95% and the headline result is 3.2 %, this scenario lands almost exactly on the baseline at 3.2 %.
  • Use it on a pull-out sample after wash testing a production lot, or during fabric approval to qualify a mill. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Wash shrinkage rate: 3.2 % (headline result)
  • Wash shrinkage rate gap to target: 64.8 points
  • Wash shrinkage rate count: 8 count
  • Total wash shrinkage rate population: 250 count

Run it with your numbers

  • To rerun this with your own numbers, open the live Wash Shrinkage Rate calculator, set right-first-time pass target to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.