Total Cycling Resistance Power Calculator

Total Cycling Resistance Power — calculate it instantly for your rides, free.

How to use

  1. Enter your values in the fields above.
  2. Press Calculate to see your result instantly.
  3. Use the Share button to copy a link to your result.

About this calculator

The total resistance a cyclist has to overcome is the sum of aerodynamic drag, rolling resistance, gravitational resistance on any climb, and drivetrain friction losses — a physics-based breakdown of exactly where a rider’s power actually goes.

Cyclists and coaches use it to see at what speed aerodynamic drag starts to dominate (typically above roughly 20–25 km/h) versus when gravity takes over on a climb, which directly informs equipment choices like aero wheels versus a lightweight climbing setup.

This calculator takes your speed, weight, grade, CdA and rolling resistance coefficient, and returns the total power required, broken down by resistance source.

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