Contact KnotWorks

KnotWorks is a small, independent, ad-supported site — there is no support team standing by, but a real person reads what comes in to support@allsplice.com.

A few things this address is genuinely useful for: a calculator that gave you a result you think is wrong (say which tool — the rope length estimator, knot selector, working load limit guide, paracord calculator, splice tuck counter, or whipping length calculator — and what you entered); a knot or tool you wish existed on the site; an out-of-date fact or broken link in the blog, learn section, or the Knots & Ropework Museum; or a bug in how a page looks or behaves on your device.

There’s no fixed response time to promise, and no ticket number or live chat — email is read and handled as it comes in. If a question is really about whether a specific rope, knot, or splice is safe for a job that could hurt someone if it failed, please consult a qualified rigger, climbing instructor, or the rope manufacturer directly; KnotWorks’s tools and content are general educational guidance, not a safety certification, and the site isn’t affiliated with any rope manufacturer, climbing organization, or sailing association.

Before writing in about a tool result, it can help to double-check the numbers you entered — a diameter, a percentage, or a unit mismatch is the most common source of a surprising answer. If it still looks wrong after that, that’s exactly the kind of message worth sending.