Horsepower-hours to kilowatt-hours
Type a value in horsepower-hours to see it in kilowatt-hours straight away, or type in the second box to convert back.
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Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Type the value in the horsepower-hours box.
- Read the result in kilowatt-hours as you type, and pick the precision you need.
- Swap the direction to convert back, or copy the result.
How it is calculated
kWh = hp·h × 0.7456998716
Multiply the value in horsepower-hours by 0.7456998716 to get kilowatt-hours.
Example
To convert 25 hp·h to kilowatt-hours: 25 × 0.7456998716 = 18.6425 kWh.
Conversion table
| Horsepower-hours (hp·h) | Kilowatt-hours (kWh) |
|---|---|
| 1 | 0.7457 |
| 2 | 1.4914 |
| 3 | 2.2371 |
| 5 | 3.7285 |
| 10 | 7.457 |
| 20 | 14.914 |
| 25 | 18.6425 |
| 50 | 37.285 |
| 100 | 74.57 |
| 250 | 186.425 |
| 500 | 372.85 |
| 1,000 | 745.7 |
About the units
- Horsepower-hour
- The energy delivered by one mechanical horsepower (550 foot-pounds per second) for one hour, about 2,684,519.5 joules.
- Kilowatt-hour
- The energy used by a 1000 watt device in one hour, exactly 3.6 million joules. Electricity bills are charged in this unit.
Limits and caveats
- Results are rounded for display and computed with the browser's floating point precision (about 15 significant digits).
- Both unit factors are exact by their official definitions.
Questions about this tool
How many kilowatt-hours are in one horsepower-hour?
1 hp·h = 0.7457 kWh exactly.
How do I convert horsepower-hours to kilowatt-hours?
Use kWh = hp·h × 0.7456998716. For example, 25 hp·h = 18.6425 kWh.
How many horsepower-hours are in one kilowatt-hour?
1 kWh = 1.34102 hp·h.
Which calorie do these converters use?
The thermochemical calorie, exactly 4.184 joules, the factor many countries use to turn kcal into kJ on food labels. The International Table calorie is 4.1868 joules, less than 0.07% larger.
What is the difference between kW and kWh?
A kilowatt is a unit of power, the rate of using energy, while a kilowatt-hour is an amount of energy. A 2 kW heater running for three hours uses 6 kWh.