How to use the E-Bike Controller Amps to Watts Calculator
The Formula
Input watts = V × A. Shaft power is lower after motor and drivetrain losses—use manufacturer efficiency when available.
Practical Example
Estimates are for planning rides, charging, and battery health—not a substitute for manufacturer specs or professional e-bike service.
About E-Bike Controller Amps to Watts Calculator
Controller to motor power
Input watts = V × A. Shaft power is lower after motor and drivetrain losses—use manufacturer efficiency when available.
Planning note
Estimates are for planning rides, charging, and battery health—not a substitute for manufacturer specs or professional e-bike service.