Yarn Calculator swatch-based

Measure and weigh a swatch, and the calculator scales yarn usage to your project size. Includes size presets and a safety margin.

Presets insert an approximate total width×height (area). You can enter your own below.

1) Your swatch

cm
cm
g
Dry the swatch, measure the “clean” area (without edges) and weigh it.

2) Your project

cm
cm
%
Recommended 10–15% for seams, swatches and margin.

3) Your yarn (from the label)

m
Example: 125 m / 50 g → enter 125 here.
g
Usually 50 g or 100 g.
Help Improve This Tool

Share Your Ideas

This Yarn Calculator is built for knitters like you, and I’d love to make it even more helpful. If you have suggestions, ideas for new features, or notice something that could be improved, your feedback is always welcome.

Together we can shape this tool into a resource that makes planning your projects easier and more enjoyable. Please use the contact form on the right to share your thoughts, I appreciate your input.