Cycling

Training calculators for runners, cyclists, swimmers and lifters — validated formulas from sports science literature.

Cycling Power Calculator

Estimate the power in watts needed to ride at a given speed from rider weight, bike weight and road gradient, using a standard physics model. Plus W/kg.

⚙️

Bike Gear Ratio Calculator

Calculate bicycle gear ratio, gear inches, development and speed from chainring, cog, wheel circumference and cadence.

🚴

FTP Calculator

Calculate cycling FTP from a 20-minute power test using the 95% convention, with Coggan's 7-zone power training zones.