Ready to predict Enter distance, grade, weight and power.

Segment

Use average grade from a route planner.

Estimated elevation gain --

Positive wind means headwind; negative means tailwind.

Power Model

Connect to Intervals.icu to unlock Best Effort.

Disconnected

No data is stored on any server. Credentials saved locally, never visible.

Rider & Power

W/kg uses body weight only. Physics uses body plus gear.

Power Mode
Total Weight --
Power-to-weight --

Aerodynamics

Lower CdA means less aero drag. It matters more at higher speed.

Road preset

Rolling Resistance

Choose a bike and surface preset, then fine tune Crr if needed.

Road Bike on Asphalt
Bike Type
Surface
Advanced Drivetrain loss and drafting options.

Drafting

Optional group riding model.