Yarn Twist Calculator
Calculate optimal twist-per-inch by fiber type and desired yarn weight for hand spinning.
Inputs
Fibers hold twist differently - wool is forgiving, silk and cotton are not
The target thickness of your finished single or ply
Wheel, e-spinner, or drop spindle - affects achievable consistency
Soft twist drapes, firm twist wears - pick for the project
Results
Twist per Inch
4.5 TPI
Wraps per Inch
10 WPI
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Start FreeYarn Twist Calculator
Artysan by Irora Labs
July 16, 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 Artysan. artisan.iroralabs.com/craft-calculators/twist-calc
Tips
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Base TPI comes from yarn weight category, adjusted for fiber characteristics and desired hand feel.
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