Cycling Calculators

Cycling FTP Estimator from 20-Min Test

Estimate Functional Threshold Power from a 20-minute cycling effort. Outputs FTP in watts, watts per kilo, and all seven Coggan training zones.

Cycling Hill Climb Power Calculator

Estimate the watts needed to ride up any hill. Enter weight, bike weight, grade, and speed to see power split by gravity, rolling, and aero drag.

Cycling Training Stress Score Calculator

Calculate TSS and Intensity Factor for any cycling ride from duration, average power, and FTP. Includes weekly training load guidance for cyclists.

Bicycle Commute Savings vs Car Calculator

Calculate annual savings from bike commuting vs driving. Inputs commute distance, days per year, gas costs, and parking. See dollars and calories.

Electric Bike Range Calculator

Estimate e-bike range from battery Wh, assist level, rider weight, terrain, and tire type. Real-world range, not optimistic showroom numbers.

Bike Tire Circumference Calculator

Calculate bike tire circumference for cyclometer setup from tire size or rollout test. Includes ISO 622, 700c, 27.5, 29er, and 26-inch wheels.

Cadence to Speed Calculator (Cycling)

Calculate bike speed from pedal cadence, gear ratio, and wheel size. Convert RPM to mph or km/h for any chainring, cog, and tire combination.

Gear Inches Calculator (Cycling)

Calculate gear inches from chainring teeth, cog teeth, and wheel diameter. Compare bike gearing across road, mountain, and gravel setups.

Bicycle Chain Wear and Replacement Calculator

Track bike chain stretch with a chain checker reading. Calculate wear percentage, miles to replacement, and avoid drivetrain damage from worn chains.

Cycling Tire Pressure Calculator

Calculate optimal bike tire pressure by rider weight, tire width, and surface. Get PSI ranges for road, gravel, MTB, and tubeless setups for grip and comfort.

Bike Saddle Height Calculator

Calculate the ideal bike saddle height from your inseam measurement. Uses the LeMond and Holmes methods for road and mountain bikes.

Bike Weight Penalty Calculator

Calculate how much time you lose per kilogram of extra bike weight on a climb. Is that expensive lightweight component worth it?

Cycling Aero Savings Calculator

Calculate time saved by reducing aerodynamic drag (CdA) on the bike. Quantify the benefit of aero gear, position changes, and helmets.

Cycling Calories per Kilometre Calculator

Calculate how many calories you burn per kilometre cycling. Enter your weight, speed, and terrain to get an accurate estimate.

Cycling Hydration Calculator

Calculate how much fluid you need per hour while cycling. Adjusts for effort level, temperature, body weight, and sweat rate.

Cycling Power Calculator

Estimate your cycling power output in watts from speed, weight, gradient, and wind. Useful for training and performance analysis.