🚴Cycling & Triathlon
Cycling and triathlon calculators: FTP estimation, power-to-weight ratio, and speed / distance / time conversions for training and racing.
Getting started
Train and race with power
Power-based training starts with one number and builds from there. Follow the steps in order.
- FTP CalculatorTest your Functional Threshold Power and set your training zones.Every zone and power target below is calculated from this one number.
- Power-to-Weight CalculatorWork out your watts per kilogram — the number that predicts climbing.W/kg is what decides how you climb, where most races are won.
- Cycling Power CalculatorSee the watts needed to hold a target speed or gradient.Knowing the watts an effort demands lets you pace it precisely.
- Climbing Time CalculatorEstimate your time up a climb from your power and weight.Turns your power numbers into a real-world result on the road.
All cycling & triathlon calculators
FTP Calculator
Estimate your Functional Threshold Power from a 20-minute test and get your full set of power training zones.
Power-to-Weight Calculator
Calculate your watts per kilogram (W/kg) — the number that best predicts climbing and racing performance.
Speed Distance Time Calculator
Enter any two of speed, distance, and time, and instantly solve for the third.
Gear Ratio Calculator
Work out your gear ratio, gear inches, and development from your chainring, cog and wheel size.
Bike Gear Speed Calculator
See how fast a gear and cadence combination will move you, in km/h and mph.
Wheel Circumference Calculator
Get the circumference value to enter into your bike computer, by tire size or measured diameter.
Calories Burned Cycling
Estimate the calories you burn on a ride from your weight, speed and time.
Power to Calories Calculator
Turn your average power and ride time into calories burned and total work done.
Cycling Power Calculator
Estimate the watts required to hold a given speed on a given gradient, with a breakdown of where the power goes.
Climbing Time Calculator
Estimate your time up a climb from your power and weight, plus your climbing rate (VAM).
Tire Pressure Calculator
Get a sensible starting tire pressure for front and rear based on your weight and tire width.
Triathlon Time Calculator
Add your swim, bike, run and transition times to project your total triathlon finish time.
Swim Pace Calculator
Work out your swim pace per 100 from any distance and time, in metres or yards.