Free Tools

Interactive calculators built for rock climbing and bouldering for beginners — gym climbing, bouldering, top-rope, gear, climbing shoes, holds and footwork, V-scale and roped grades, training, belaying, falling, and safety. No sign-up, no downloads — enter your numbers and get an answer you can act on.

Climbing Grade Converter

Convert between V-scale bouldering grades and Font, and between YDS and French route grades, both directions.

Rope Length Checker

Check whether your rope is long enough to lower or rappel off a route, or see the longest route your rope can handle.