By using Stitch Math you agree to these terms. They are deliberately short.
Information, not instruction
The calculators, charts and yarn records are provided for general reference. They are estimates, not a guarantee that a project will fit, use the stated quantity of yarn, or behave as expected. Gauge, ease, fibre behaviour and blocking vary. Always knit a swatch and check the label on your yarn.
No warranty
The site is provided “as is”, without warranties of any kind, express or implied, including fitness for a particular purpose and accuracy. Yarn specifications are checked against manufacturer and retailer listings on the date shown, but manufacturers can change a product without notice.
Limitation of liability
To the extent permitted by law, Stitch Math is not liable for loss or damage arising from use of the site, including wasted yarn, failed projects or reliance on an estimate.
Intellectual property
The text, diagrams and code of this site are its own work. Industry standards belong to their publishers and are referenced, not reproduced wholesale. Yarn brand names and line names are trademarks of their owners and are used for identification only. Product photography and manufacturer descriptions are not reproduced here.
You may quote short passages with attribution and a link. You may not republish the yarn library in bulk, mirror the site, or use the contents to train a commercial model without permission.
External links
Links to manufacturers, standards bodies and retailers are provided for convenience. Their content and practices are not under this site's control.
Changes
The site may change, and these terms may be updated. The date below records the last substantive change.
Last updated 22 October 2026.