Yarn Twist Calculator
Calculate optimal twist-per-inch by fiber type and desired yarn weight for hand spinning.
Inputs
Results
Twist per Inch
4.5 TPI
Wraps per Inch
10 WPI
Track real costs and manage Spinning production in Artisan — free forever, no credit card
Start FreeYarn Twist Calculator
Artisan by Irora Labs
March 23, 2026
Inputs
| Fiber Type | wool |
| Yarn Weight | worsted |
| Spinning Method | wheel |
| Desired Feel | balanced |
Results
| Twist per Inch | 4.5 TPI |
| Wraps per Inch | 10 WPI |
Created with Artisan. artisan.iroralabs.com/craft-calculators/twist-calc
Tips
Open formula
Base TPI comes from yarn weight category, adjusted for fiber characteristics and desired hand feel.
Want a copy of your results?
Email yourself a summary. No account required.
Explore the full platform
Your entire craft operation for $0 – $4.99/mo. Self-funded, so prices stay honest. Free tier forever. No credit card required.
See pricing →From calculator to production
Save results, track costs
This calculator is built into every Spinning and Fiber Arts workspace. Save calculations to your workspace, email results, and access all 25+ calculators. Free forever on the $0 plan. No credit card required.