Contact

Found a figure on StitchHow that looks wrong, or a calculator giving you a result you don't trust? Tell us. We'd genuinely rather fix a real error than have it sit uncorrected on the site.

What's useful to include

If you're reporting a possible calculation error, the exact inputs you used and what result you expected help far more than "this seems off" — the calculators are deterministic, so we can usually reproduce an issue directly from your inputs.

If you're suggesting a new calculator or reference page, tell us what question you were trying to answer and what you searched for before landing here — that's the most useful signal for what to build next.

Use the form below

The contact form on this page reaches us directly. We read every message, though we can't guarantee an individual reply to every one.