Sett calculator
Estimate weaving sett from WPI and cloth type
Use wraps per inch as a starting point, choose a structure factor, then sample before committing expensive yarn.
Quick sett estimate
How to use the result
The result is a starting sett, not a guarantee. Yarn fiber, twist, finishing, beat, and weave structure all change the finished cloth. Use the estimate to choose a reed or heddle, then weave a sample.
Common sett starting points
| Yarn type | Loose/open | Balanced | Dense/twill |
|---|---|---|---|
| Worsted knitting yarn | 6-7 EPI | 8 EPI | 10 EPI |
| DK / sport yarn | 8 EPI | 10-12 EPI | 12-15 EPI |
| 8/2 cotton | 16 EPI | 18-20 EPI | 22-24 EPI |
| 10/2 cotton | 20 EPI | 24 EPI | 28 EPI |