FTP calculator
Estimate FTP from a 20-minute or ramp test.
Find your FTPFree · No signupCalculators and ride tools
Free Cycling Calculators
Set your training numbers in a minute: FTP, power and heart-rate zones, sweet spot, Zone 2, training stress and power-to-weight. Plus a FIT file viewer that reads your rides in the browser.
Power zones calculator
Your 7 Coggan zones in watts and W/kg.
Get your zonesHeart-rate zones
Friel, Coggan or max-HR zones for cycling.
Get your HR zonesSweet spot calculator
88–94% of FTP and workouts to ride.
Find your sweet spotTSS calculator
Training stress from time, power and FTP.
Work out TSSW/kg chart
Your power-to-weight and how it rates.
Check your W/kgZone 2 calculator
Endurance power, heart rate and weekly split.
Find Zone 2FIT file viewer
Open any FIT, GPX or TCX ride. No account.
View a ride file