# Electric Horsepower Conversion

The electric horsepower is a unit used to measure power. Use one of the conversion calculators below to convert to another unit of measure, or read on to learn more about electric horsepower.

## Electric Horsepower Conversion Calculators

Choose a unit of power to convert to.

**SI Units**

- Convert electric horsepower to watts
- 1 electric horsepower is equal to 746 watts
- Convert electric horsepower to microwatts
- 1 electric horsepower is equal to 746,000,000 microwatts
- Convert electric horsepower to milliwatts
- 1 electric horsepower is equal to 746,000 milliwatts
- Convert electric horsepower to kilowatts
- 1 electric horsepower is equal to 0.746 kilowatts
- Convert electric horsepower to megawatts
- 1 electric horsepower is equal to 0.000746 megawatts

**US Customary & Imperial Units**

- Convert electric horsepower to mechanical horsepower
- 1 electric horsepower is equal to 1.000402 mechanical horsepower
- Convert electric horsepower to btu per hour
- 1 electric horsepower is equal to 2,545 btu per hour

**Other Units**

- Convert electric horsepower to kilocalories per hour
- 1 electric horsepower is equal to 641.873928 kilocalories per hour

**Related Calculators**

- Convert horsepower to amperes
- 1 horsepower at 120 volts with 90% efficiency is equal to 6.91 amps
- Convert horsepower to kilovolt-amperes
- 1 horsepower with power factor of .8 is equal to .9325 kilovolt-amps

## Electric Horsepower Definition and Usage

Electric horsepower is used to measure the output of electric motors and other electrical machines in the US. One electric horsepower is equal to exactly 746 watts.

The electric horsepower is a US customary and imperial unit of power. Electric horsepower can be abbreviated as *hp(E)*, for example 1 electric horsepower can be written as 1 hp(E).

### Background and Origin

The term horsepower was adopted by Scottish inventor James Watt to measure the power output of his steam engine and to compare that power with that of horses horses. Horsepower were later used to measure the power output of piston and turbine engines and electrical motors. There are now several different types of horsepower, including mechanical, electrical, brake, and indicated, and they all have different applications in industry.

## Electric Horsepower Measurement Conversion Table

electric horsepower | watts | microwatts | milliwatts | kilowatts | megawatts | mechanical horsepower | btu per hour | kilocalories per hour |
---|---|---|---|---|---|---|---|---|

1 hp(E) | 746 W | 746,000,000 µW | 746,000 mW | 0.746 kW | 0.000746 MW | 1.000402 hp(I) | 2,545 Btu/h | 641.873928 kcal/h |

2 hp(E) | 1,492 W | 1,492,000,000 µW | 1,492,000 mW | 1.492 kW | 0.001492 MW | 2.000805 hp(I) | 5,091 Btu/h | 1,284 kcal/h |

3 hp(E) | 2,238 W | 2,238,000,000 µW | 2,238,000 mW | 2.238 kW | 0.002238 MW | 3.001207 hp(I) | 7,636 Btu/h | 1,926 kcal/h |

4 hp(E) | 2,984 W | 2,984,000,000 µW | 2,984,000 mW | 2.984 kW | 0.002984 MW | 4.00161 hp(I) | 10,182 Btu/h | 2,567 kcal/h |

5 hp(E) | 3,730 W | 3,730,000,000 µW | 3,730,000 mW | 3.73 kW | 0.00373 MW | 5.002012 hp(I) | 12,727 Btu/h | 3,209 kcal/h |

6 hp(E) | 4,476 W | 4,476,000,000 µW | 4,476,000 mW | 4.476 kW | 0.004476 MW | 6.002415 hp(I) | 15,273 Btu/h | 3,851 kcal/h |

7 hp(E) | 5,222 W | 5,222,000,000 µW | 5,222,000 mW | 5.222 kW | 0.005222 MW | 7.002817 hp(I) | 17,818 Btu/h | 4,493 kcal/h |

8 hp(E) | 5,968 W | 5,968,000,000 µW | 5,968,000 mW | 5.968 kW | 0.005968 MW | 8.00322 hp(I) | 20,364 Btu/h | 5,135 kcal/h |

9 hp(E) | 6,714 W | 6,714,000,000 µW | 6,714,000 mW | 6.714 kW | 0.006714 MW | 9.003622 hp(I) | 22,909 Btu/h | 5,777 kcal/h |

10 hp(E) | 7,460 W | 7,460,000,000 µW | 7,460,000 mW | 7.46 kW | 0.00746 MW | 10.004025 hp(I) | 25,455 Btu/h | 6,419 kcal/h |

11 hp(E) | 8,206 W | 8,206,000,000 µW | 8,206,000 mW | 8.206 kW | 0.008206 MW | 11.004427 hp(I) | 28,000 Btu/h | 7,061 kcal/h |

12 hp(E) | 8,952 W | 8,952,000,000 µW | 8,952,000 mW | 8.952 kW | 0.008952 MW | 12.00483 hp(I) | 30,545 Btu/h | 7,702 kcal/h |

13 hp(E) | 9,698 W | 9,698,000,000 µW | 9,698,000 mW | 9.698 kW | 0.009698 MW | 13.005232 hp(I) | 33,091 Btu/h | 8,344 kcal/h |

14 hp(E) | 10,444 W | 10,444,000,000 µW | 10,444,000 mW | 10.444 kW | 0.010444 MW | 14.005635 hp(I) | 35,636 Btu/h | 8,986 kcal/h |

15 hp(E) | 11,190 W | 11,190,000,000 µW | 11,190,000 mW | 11.19 kW | 0.01119 MW | 15.006037 hp(I) | 38,182 Btu/h | 9,628 kcal/h |

16 hp(E) | 11,936 W | 11,936,000,000 µW | 11,936,000 mW | 11.936 kW | 0.011936 MW | 16.00644 hp(I) | 40,727 Btu/h | 10,270 kcal/h |

17 hp(E) | 12,682 W | 12,682,000,000 µW | 12,682,000 mW | 12.682 kW | 0.012682 MW | 17.006842 hp(I) | 43,273 Btu/h | 10,912 kcal/h |

18 hp(E) | 13,428 W | 13,428,000,000 µW | 13,428,000 mW | 13.428 kW | 0.013428 MW | 18.007245 hp(I) | 45,818 Btu/h | 11,554 kcal/h |

19 hp(E) | 14,174 W | 14,174,000,000 µW | 14,174,000 mW | 14.174 kW | 0.014174 MW | 19.007647 hp(I) | 48,364 Btu/h | 12,196 kcal/h |

20 hp(E) | 14,920 W | 14,920,000,000 µW | 14,920,000 mW | 14.92 kW | 0.01492 MW | 20.00805 hp(I) | 50,909 Btu/h | 12,837 kcal/h |

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