Fabric Pre-Shrink Cut Size Calculator
Calculate fabric pre-shrink cut size from the stated quantities. Divide by the retained fraction; simply adding a percent gives a different result.
Reference calculation or estimate for example inputs; assumptions and limitations apply.
Calculations run in your browser.
What to enter
| Input | Meaning and units |
|---|---|
| Target length (cm) | Enter target length in cm; use the same basis as the other measurements. |
| Target width (cm) | Enter target width in cm; use the same basis as the other measurements. |
| Measured length shrinkage (%) | Enter percentage units: 5 means 5%, not a fraction of 0.05. |
| Measured width shrinkage (%) | Enter percentage units: 5 means 5%, not a fraction of 0.05. |
Understanding your result
Divide by the retained fraction; simply adding a percent gives a different result.
Common mistakes
- Length and width shrinkage can differ.
Check your calculation
- Use the worked example as a known reference case, then change one input at a time and check the direction and units of the response.
Calculation checks, sources and review limits
What starting dimensions yield a target size under measured directional shrinkage?
Calculate fabric pre-shrink cut size from the stated quantities. Divide by the retained fraction; simply adding a percent gives a different result.
Common uses
- What starting dimensions yield a target size under measured directional shrinkage
How it works
startL=targetL/(1-shrinkL/100); startW=targetW/(1-shrinkW/100)
Worked example
Enter Target length: 95 cm; Target width: 98 cm; Measured length shrinkage: 5 %; Measured width shrinkage: 2 %. Results: Estimated starting length: 100 cm; Estimated starting width: 100 cm.