Horsepower to Kilowatts Converter
Convert horsepower to kilowatts instantly with this free horsepower to kilowatts converter. Enter any value to get an accurate power conversion, plus the formula, the conversion factor and a full reference table.
What is 1 horsepower in kilowatts?
1 horsepower is equal to 0.745699872 kilowatts.
1 ÷ 1.34102209 = 0.745699872 kilowatts
1 horsepower = 0.7456998716 kilowatts
Horsepower to Kilowatts formula
kW = hp ÷ 1.34102209
The horsepower to kilowatts conversion factor is 0.745699871582 (rounded). 1 horsepower = 0.745699871582 kilowatts, and 1 kilowatt = 1.3410220896 horsepower.
Regional note. Mechanical horsepower (745.7 W) and metric horsepower / PS (735.5 W) differ by about 1.4%. This page uses mechanical horsepower.
Worked examples
- 2 horsepower = 1.49139974 kilowatts — 2 ÷ 1.34102209 = 1.49139974 kilowatts
- 6 horsepower = 4.47419923 kilowatts — 6 ÷ 1.34102209 = 4.47419923 kilowatts
- 10 horsepower = 7.45699872 kilowatts — 10 ÷ 1.34102209 = 7.45699872 kilowatts
Horsepower to Kilowatts conversion table
Every value below is calculated with the exact conversion factor and rounded for display.
| Horsepower (hp) | Kilowatts (kW) |
|---|---|
| 1 hp | 0.74569987 kW |
| 2 hp | 1.4913997 kW |
| 3 hp | 2.2370996 kW |
| 4 hp | 2.9827995 kW |
| 5 hp | 3.7284994 kW |
| 6 hp | 4.4741992 kW |
| 7 hp | 5.2198991 kW |
| 8 hp | 5.965599 kW |
| 9 hp | 6.7112988 kW |
| 10 hp | 7.4569987 kW |
| 12 hp | 8.9483985 kW |
| 15 hp | 11.185498 kW |
| 20 hp | 14.913997 kW |
| 25 hp | 18.642497 kW |
| 30 hp | 22.370996 kW |
| 50 hp | 37.284994 kW |
| 75 hp | 55.92749 kW |
| 100 hp | 74.569987 kW |
| 500 hp | 372.84994 kW |
| 1,000 hp | 745.69987 kW |
When you need to convert horsepower to kilowatts
- Comparing engine or motor output quoted in horsepower, metric horsepower or kilowatts.
- Sizing heating and cooling equipment rated in BTU per hour or watts.
Common mistakes to avoid
- Dividing when you should multiply. Because 1 horsepower = 0.7457 kilowatts, the answer should be smaller than the number you started with.
- Rounding too early. Convert first at full precision, then round the final answer to the precision the task actually needs.
How precise does the answer need to be?
Round only at the end, and only to the precision your task actually needs. The converter above keeps full double precision internally and rounds for display.
How these units are defined
- Horsepower (hp): Mechanical horsepower: exactly 550 foot-pounds per second. The accepted value is a measured or conventional figure rather than an exact definition, so the factor shown is rounded.
- Kilowatt (kW): 1,000 watts; engine and appliance power in metric markets. This unit's relationship to the SI base unit is exact by definition, so no rounding enters the conversion factor.
Related conversions
Frequently asked questions
- What is 1 horsepower in kilowatts?
- 1 horsepower is equal to 0.745699872 kilowatts.
- How many horsepower are in one kilowatt?
- There are 1.34102209 horsepower in 1 kilowatt.
- How do you convert horsepower to kilowatts?
- Multiply the number of horsepower by 0.745699872 — or use the formula kW = hp ÷ 1.34102209.
- What is 6 horsepower in kilowatts?
- 6 horsepower is 4.47419923 kilowatts. 6 ÷ 1.34102209 = 4.47419923 kilowatts.
- Is the horsepower to kilowatts conversion exact?
- The factor 0.745699871582 is a rounded value because at least one of these units is defined by measurement rather than by an exact definition.
- Does this use US or Imperial kilowatts?
- Mechanical horsepower (745.7 W) and metric horsepower / PS (735.5 W) differ by about 1.4%. This page uses mechanical horsepower.