Brushless Motor Calculator

Calculate BLDC motor performance from KV rating, voltage, and current specifications.

Motor Specifications

KV Rating (RPM/V)

Supply Voltage (V)

No-Load Current (A)

Max Current (A)

Number of Poles

Phase Resistance (Ohms)

Throttle: 100%

Performance at 100% Throttle

25,530

Max RPM

46

Max Power (W)

Motor Constants

Torque Constant Kt0.588 mN-m/A

Max Torque17169.6 mN-m

Electrical Frequency2979 Hz

Efficiency & Power

Input Power333.0 W

Copper Loss45.0 W

Efficiency13.8%

Magnet Pairs7