How to convert 300 kW to horsepower
One kilowatt equals 1.34102 mechanical horsepower. For 300 kW:
300 kW × 1.34102 = 402.3 hp
Rounded, a 300 kW motor is rated at about 402 hp. European brochures often quote metric horsepower instead: 408 PS.
300 kW in other units
| Metric horsepower (PS) | 407.89 PS |
| Mechanical horsepower (hp) | 402.31 hp |
| Watts | 300,000 W |
| BTU per hour | 1,023,642 BTU/h |
What torque does 300 kW give?
Power and torque are linked by engine speed: torque (lb-ft) = hp × 5,252 ÷ rpm, or torque (Nm) = kW × 9,549 ÷ rpm. If 300 kW is produced at these speeds:
| Engine speed | Torque |
|---|---|
| 1,500 rpm | 1,910 Nm (1,409 lb-ft) |
| 2,500 rpm | 1,146 Nm (845 lb-ft) |
| 3,500 rpm | 818 Nm (604 lb-ft) |
| 4,500 rpm | 637 Nm (470 lb-ft) |
| 5,500 rpm | 521 Nm (384 lb-ft) |
| 6,500 rpm | 441 Nm (325 lb-ft) |
Running at 300 kW
A motor or heater running at 300 kW for one hour uses 300 kWh. At $0.17 per kWh that costs about $51.00 per hour.
300 kW as a charging rate
An EV charging at 300 kW adds 42 kWh (10–80% of a 60 kWh battery) in about 14 min, including roughly 10% charging losses and a realistic 65% average power on a DC fast charger.
Is 300 kW a lot?
Sports cars, high-performance SUVs, luxury sedans and dual-motor electric cars reach this output.
Values around 300 kW
| kW | PS | hp |
|---|---|---|
| 296 kW | 402.45 PS | 396.94 hp |
| 297 kW | 403.81 PS | 398.28 hp |
| 298 kW | 405.17 PS | 399.62 hp |
| 299 kW | 406.53 PS | 400.97 hp |
| 300 kW | 407.89 PS | 402.31 hp |
| 301 kW | 409.25 PS | 403.65 hp |
| 302 kW | 410.61 PS | 404.99 hp |
| 303 kW | 411.97 PS | 406.33 hp |
| 304 kW | 413.32 PS | 407.67 hp |
Frequently asked questions
How many hp is 300 kW?
300 kW is 402.3 mechanical horsepower (402 hp rounded).
How many kW is 402 hp?
402 hp is 299.8 kW (hp × 0.7457).
How many PS is 300 kW?
300 kW is 407.89 metric horsepower (PS).
Is 300 kW a lot?
Sports cars, high-performance SUVs, luxury sedans and dual-motor electric cars reach this output.
Last updated November 10, 2026