E-Bike & E-Scooter Speed and Range Calculator

Light Mode

Engineering-based simulation tool for electric bike and scooter performance.

Battery Voltage (V)

Battery voltage (V).

Battery Max Current (A)

Maximum current battery can supply (A).

Motor Power Rating (W)

Motor rated power (W).

Motor Nominal Voltage (V)

Nominal operating voltage of the motor (usually equals battery).

Controller Max Current (A)

Controller maximum current (A).

Motor + Controller Efficiency (%)

Combined efficiency (motor + controller). Default 85%.

Wheel Diameter (cm)

Wheel diameter; radius used for calculations (m).

Wheel Width (cm)

Wheel width (minor effect on rolling resistance).

Total Mass (kg)

Rider + vehicle mass (kg).

Optional: Max Motor RPM (rpm)

If known, enter for physical speed limit; otherwise a default is used.

Optional: Gear Ratio (motor : wheel)

Gear ratio. Default 1 = direct drive.

Optional: Battery Capacity (Ah)

Enter to compute estimated runtime and range.