Calculators
Cycling Calculators
19 tools to set up your bike, pick components and train by the numbers. Free, no sign-up, and they all talk to each other.
Setup
Size and Fit
Drivetrain and Wheels
Performance
Power and Speed
Watts to hold a speed (or the other way around) with position, wind and grade.
Climb Time
How long a climb would take you based on your watts and weight.
FTP and Power Zones
Your FTP from a test and your 7 training zones.
Watts per Kilo
Your W/kg and how you stack up against other riders.
Heart Rate Zones
Heart rate zones from max heart rate, heart rate reserve or threshold.
Cycling Calories
Calories burned from watts or speed, time and weight.
E-Bikes and Commuting
Choosing a Bike
Frequently asked questions
Which calculator should I use to set up a new bike?
Start with bike size if you haven't bought it yet; if you already have it, go for saddle height and tire pressure. Those are the two adjustments you feel the most.
Do I have to enter my details in every calculator?
No. Save your bike in My Bike and every calculator fills in your weight, measurements, wheels and drivetrain on its own.
Do the calculators work offline?
Once the page has loaded, everything is calculated in your browser: nothing is sent to any server.
Can I put a calculator on my website or blog?
Yes. The tire pressure, bike size, saddle height, gear ratio, FTP and e-bike range calculators have an embeddable version: copy the code from widgets. They are free and ad-free.
Save your bike once, use it everywhere
In My Bike you enter your measurements, wheels and drivetrain. From there we give you your tire pressure, saddle height, gearing and chain length, plus a shop sheet you can print.