Electric cars are sold in kilowatts — 150 kW, 300 kW — while a century of American car culture thinks in horsepower. The translation is 1.34102: multiply kilowatts by it to get mechanical horsepower. A 100 kW EV motor is about 134 hp, roughly a Honda Civic. A 300 kW performance EV is about 402 hp, firmly in sports-car territory. Tesla, Ford, and Hyundai all quote kW on spec sheets because electric motors are rated like electrical equipment, but buyers still ask "how much horsepower?" because that is the language of speed they grew up with.

Type your value in the Kilowatts (kW) box and the Horsepower (hp) readout multiplies by 1.34102, with a Watts (W) column at 1,000 each for the electrical view. The 150 kW example gives about 201 hp — a solid family-sedan figure. The 100 kW EV-motor example gives 134.1 hp. Going the other way, divide horsepower by 1.34102 (or multiply by 0.7457) to get kilowatts — a 400 hp V8 is about 298 kW. One caution: EV makers sometimes quote combined motor peak power, which can exceed what the battery sustains, so compare like with like. Whether you are cross-shopping gas versus electric, sizing a generator, or just decoding a window sticker, the 1.34102 factor turns the metric rating into the number American drivers feel.

With the pre-filled defaults — Kilowatts (kW) 100 — the Kilowatt to Horsepower returns Horsepower (hp) 134.1020, Watts (W) 100,000. Change any input and those results update instantly, so you can see exactly how each number you enter moves the answer.