Terms of Use

fibercalc is free to use, with no account required.

The calculators provide reference estimates based on the numbers you enter. They're offered as-is, with no warranty of any kind. Before cutting yarn or committing to a project, always verify the results against your own swatch and gauge — the calculators can't account for your specific tension, yarn, or hook/needle.

The tools and written content on this site belong to Pious Angel. Standard sizing and gauge reference values used in the calculators are drawn from public reference data, not proprietary to us.

This site is supported by advertising served by Google. See the Privacy Policy for what that means for your data.

You're welcome to link to this site.

Questions about these terms are welcome — see the Contact page.