Power converter
Converting horsepower to kilowatts is a small, specific task, but getting it wrong by even a rounding error can throw off a recipe, a shipping quote, a construction cut list, or a homework answer. This page runs a live Horsepower to Kilowatts converter — type a number in hp and get the exact kW equivalent instantly, calculated with the standard conversion factor rather than an approximation. One hp equals 0.7457 kW, and the calculator below scales that ratio to any amount you enter.
To convert a value from horsepower to kilowatts, multiply the number of hp by 0.7457. That figure comes from expressing both units against the same reference — in this case, power are compared through a common power base unit — so the ratio holds no matter how large or small the input is.
Common hp amounts and their kW equivalents, rounded to six decimal places for accuracy:
Power conversions come up constantly outside of a classroom. Recipes written for a US audience use units while international ones use metric measurements; travel and navigation mix miles, kilometers, and nautical units depending on the country and mode of transport; and technical fields like engineering, medicine, and manufacturing often require converting between systems to match a spec sheet, a prescription, or a purchase order.
Manual conversion is where mistakes creep in — misplacing a decimal, using an outdated or rounded factor, or mixing up which unit is larger. Because this converter applies the exact multiplier every time, the result for horsepower to kilowatts is consistent whether you're converting a single small number or a large batch of values one at a time.
1 hp equals 0.7457 kW. Multiply any hp value by this factor to get kW.
It uses the standard defined conversion factor for horsepower and kilowatts, so results are precise to the rounding shown, not a rough estimate.
Yes — use the swap control in the calculator to reverse the direction and convert kilowatts into horsepower instead.
No. The calculation runs locally in your browser using JavaScript, so nothing you type is sent anywhere.
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| Horsepower | Kilowatts |
|---|---|
| 1 hp | 0.7457 kW |
| 5 hp | 3.7285 kW |
| 10 hp | 7.457 kW |
| 25 hp | 18.6425 kW |
| 50 hp | 37.285 kW |
| 100 hp | 74.57 kW |
| 500 hp | 372.85 kW |
| 1000 hp | 745.7 kW |