Free Cycling & Bike Fitting Calculators

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Frame size, saddle height, handlebar reach, stem length, crank length, standover height, and stack/reach calculators.

FTP zones, calories burned, speed/distance/time, power-to-weight, VO2max, hill climb, wind resistance, and TSS calculators.

Gear ratio, gear inches, speed at cadence, chainring/cog combos, tire circumference, wheel comparison, and drivetrain efficiency calculators.

Chain wear, tire pressure, spoke tension, annual cost, commute savings, bike depreciation, and component replacement calculators.

Calculate the ideal road bike frame size based on your height and inseam length. Get recommendations for top tube length and stem size.

Calculate the correct mountain bike frame size based on your height and riding discipline. Covers XC, trail, and enduro sizing.

Calculate your optimal saddle height using multiple methods: inseam formula, Hamley method, and heel method. Prevent knee pain and maximize power.

Calculate your seven power training zones based on Functional Threshold Power (FTP). Used by coaches worldwide for structured training.

Estimate calories burned during cycling based on weight, speed, duration, and terrain. Accounts for wind resistance and gradient.

Calculate any one of speed, distance, or time given the other two. Essential for planning rides and setting training targets.

Calculate your power-to-weight ratio (W/kg) and see how you compare to different cycling categories from beginner to pro.

Estimate your climbing time based on power, weight, gradient, and distance. Compare against KOM/QOM benchmarks for popular climbs.

Calculate gear ratios for any chainring and cog combination. Compare ratios across your cassette to find optimal gearing for your terrain.

Calculate your ground speed for any gear and cadence combination. Find your ideal cadence for target speeds or see what gears you need.