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Tools
Free calculators for road and gravel riders. They run in your browser, and each one cites its method.
All tools
ToolRoadGravelTires & pressure
Tire pressure calculator
Front and rear pressure in psi and bar from your weight, tire width and riding surface. Road and gravel, tubeless or tubes.
ToolRoadGravel
Gear ratio calculator
Ratio, development in metres and speed at 90 rpm for every gear. Compare two setups, like 2x against 1x.
ToolPower metersTrainers
FTP and power zone calculator
Your FTP from a 20-minute or ramp test, watts per kilo, and all seven Coggan power zones in watts.