Motor HP & Power Calculator.
Convert between motor power, torque, and RPM in any unit. Compute electrical input power and current for 1-phase and 3-phase induction motors. Sized for Indian 415V / 50Hz and IEC / NEMA standards.
RPM — typical: 750, 1000, 1440, 2880 (for 50 Hz Indian motors)
Leave blank to auto-compute, or enter to find required power
TORQUE
—
N·m
Power (kW)
—
Power (HP)
—
Torque (kgf·m)
—
Torque (lb·ft)
—
Angular speed
—
Frequency
—
P (kW) = T (N·m) × n (RPM) / 9550
P (HP) = T (lb·ft) × n (RPM) / 5252
1 HP = 0.7457 kW | 1 PS = 0.7355 kW
P (HP) = T (lb·ft) × n (RPM) / 5252
1 HP = 0.7457 kW | 1 PS = 0.7355 kW
Synchronous speed reference (50 Hz / 60 Hz)
| Poles | Sync RPM (50 Hz) | Typical full-load (50 Hz) | Sync RPM (60 Hz) | Typical full-load (60 Hz) |
|---|---|---|---|---|
| 2-pole | 3000 | 2880 | 3600 | 3450 |
| 4-pole | 1500 | 1440 | 1800 | 1750 |
| 6-pole | 1000 | 960 | 1200 | 1150 |
| 8-pole | 750 | 720 | 900 | 860 |
| 12-pole | 500 | 480 | 600 | 575 |