Start here
Choose the calculation that matches your problem
The tools are deliberately narrow. Start with the question you can measure, then check construction before changing a pattern.
01
I need a yarn estimate
You have a representative swatch, target dimensions, and product-specific label values.
Use yarn calculator →02
My gauge differs
You need simple count candidates, not an automatic pattern rewrite.
Use gauge planner →03
I must preserve a repeat
You know the multiple, balance stitches, and chain convention.
Use repeat calculator →04
I want to replace a yarn
You know the pattern quantity and can compare the candidate label and swatch.
Use substitution calculator →Stop and verify
Arithmetic cannot validate shaping, fit, drape, elasticity, durability, or color behavior. When construction or fabric changes, use the tool as a checkpoint rather than an approval.