Free cycling tools

Check pressure, fit, gearing, and ride fuel. Each result is a starting point you can adjust on the bike.

Tyre Pressure Calculator

Start from rider weight, tyre width, rim width, and surface.

Estimate saddle height, frame range, reach, and cockpit size.

Check how a chainring, cassette, or tyre change affects speed.

Plan what to carry for carbs, bottles, sodium, and ride length.

Send us the result and tell us what feels wrong.

Sent occasionally.