Horsepower to Kilowatts (hp to kW) Converter
1 horsepower (hp) = 0.7457 kilowatts (kW). To convert horsepower to kilowatts, multiply by 0.7457: 150 hp × 0.7457 = 111.855 kW.
Quick facts
- 1 hp = 0.7457 kW
- 1 kW = 1.34102 hp
- Formula: kW = hp × 0.7457
- Quick estimate: multiply by about 0.75
How to convert horsepower to kilowatts
- Take the value in horsepower.
- Multiply it by 0.7457 (the number of kilowatts in one horsepower).
- Round the result to the precision you need.
Worked example (a family car engine): 150 hp × 0.7457 = 111.855 kW.
To convert kilowatts back to horsepower, multiply by 1.34102, or divide by 0.7457.
Source: NIST SP 811 (2008), Appendix B (mechanical horsepower and international-table BTU).
Horsepower to Kilowatts conversion table
| Horsepower [hp] | Kilowatts [kW] |
|---|---|
| 0.01 hp | 0.0074569987 kW |
| 0.1 hp | 0.0745699872 kW |
| 1 hp | 0.7456998716 kW |
| 2 hp | 1.4913997432 kW |
| 3 hp | 2.2370996147 kW |
| 5 hp | 3.7284993579 kW |
| 10 hp | 7.4569987158 kW |
| 20 hp | 14.9139974316 kW |
| 50 hp | 37.2849935791 kW |
| 100 hp | 74.5699871582 kW |
| 1000 hp | 745.6998715823 kW |
hp to kW chart from 1 to 100
- 1 hp 0.7457 kW
- 2 hp 1.4914 kW
- 3 hp 2.2371 kW
- 4 hp 2.9828 kW
- 5 hp 3.7285 kW
- 6 hp 4.4742 kW
- 7 hp 5.2199 kW
- 8 hp 5.9656 kW
- 9 hp 6.7113 kW
- 10 hp 7.457 kW
- 11 hp 8.2027 kW
- 12 hp 8.9484 kW
- 13 hp 9.6941 kW
- 14 hp 10.4398 kW
- 15 hp 11.1855 kW
- 16 hp 11.9312 kW
- 17 hp 12.6769 kW
- 18 hp 13.4226 kW
- 19 hp 14.1683 kW
- 20 hp 14.914 kW
- 25 hp 18.6425 kW
- 30 hp 22.371 kW
- 35 hp 26.0995 kW
- 40 hp 29.828 kW
- 45 hp 33.5565 kW
- 50 hp 37.285 kW
- 55 hp 41.0135 kW
- 60 hp 44.742 kW
- 65 hp 48.4705 kW
- 70 hp 52.199 kW
- 75 hp 55.9275 kW
- 80 hp 59.656 kW
- 85 hp 63.3845 kW
- 90 hp 67.113 kW
- 95 hp 70.8415 kW
- 100 hp 74.57 kW
Kilowatts to Horsepower conversion table
| Kilowatts [kW] | Horsepower [hp] |
|---|---|
| 0.01 kW | 0.0134102209 hp |
| 0.1 kW | 0.134102209 hp |
| 1 kW | 1.3410220896 hp |
| 2 kW | 2.6820441792 hp |
| 3 kW | 4.0230662688 hp |
| 5 kW | 6.705110448 hp |
| 10 kW | 13.410220896 hp |
| 20 kW | 26.8204417919 hp |
| 50 kW | 67.0511044798 hp |
| 100 kW | 134.1022089595 hp |
| 1000 kW | 1341.022089595 hp |
Horsepower vs Kilowatts
| Horsepower | Kilowatt | |
|---|---|---|
| Symbol | hp | kW |
| Equals | 1 hp = 0.7457 kW | 1 kW = 1.34102 hp |
What is a horsepower?
Originally defined to compare steam engines to draft horses. Used worldwide for engine and motor power ratings.
What is a kilowatt?
Equal to 1,000 watts. Used for electric motors, heaters, and electric vehicle power.
Frequently asked questions
How many kilowatts are in a horsepower?
There are 0.7457 kilowatts in 1 horsepower (1 hp = 0.7456998716 kW).
How many horsepower are in a kilowatt?
There are 1.34102 horsepower in 1 kilowatt (1 kW = 1.3410220896 hp).
How do I convert horsepower to kilowatts?
Multiply the number of horsepower by 0.7457. For example, 10 hp × 0.7457 = 7.457 kW. To convert back, multiply by 1.34102.
What is 10 hp in kilowatts?
10 hp = 7.457 kW.
What is 100 hp in kilowatts?
100 hp = 74.57 kW.
Is the conversion exact?
Yes. The factor comes from the official definitions of both units (NIST SP 811 (2008), Appendix B (mechanical horsepower and international-table BTU)). Results are shown to up to 10 decimal places; round them to suit your purpose.
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