EV Motor Calculator
Torque, power, speed — the physics behind why EVs feel so fast. Convert kW to hp, Nm to lb-ft, and calculate torque from power and RPM.
Typical peak torque RPM: 6,000-10,000.
mechanical horsepower
assumes ~2 t vehicle
rough estimate, AWD faster
Common EV motor outputs
| Vehicle | Power | HP | Torque |
|---|---|---|---|
| Nissan LEAF | 160 kW | 214 hp | ~340 Nm |
| VW ID.4 Pro | 150 kW | 201 hp | ~310 Nm |
| Tesla Model 3 LR | 371 kW | 498 hp | ~510 Nm |
| Porsche Taycan Turbo S | 560 kW | 750 hp | ~1,050 Nm |
Frequently asked questions
How do I calculate motor torque from power?
Torque (Nm) = 9.5488 × power (kW) ÷ RPM. A 150 kW motor at 8,000 RPM delivers ~179 Nm. EVs feel fast because they produce near-peak torque instantly.
Why do EVs have so much torque?
Electric motors deliver near-maximum torque from 0 RPM, unlike combustion engines that need revs. This is why a 200 hp EV accelerates like a 280 hp petrol car.
What is the difference between kW and Nm?
kW is power (how fast energy is used), Nm is torque (turning force). Power = torque × rotational speed. A motor can have huge torque but moderate power if it spins slowly.
How do I convert lb-ft to Nm?
Multiply lb-ft by 1.3558 to get Nm. A motor producing 400 lb-ft produces about 542 Nm.