Convert between watts, kilowatts, and horsepower.
Free to use, no sign-up required. Power Converter is one of 198 tools built into Xenition, alongside a chat that can use them for you.
Converts power between watts, kilowatts, megawatts, horsepower, metric horsepower (PS) and BTU per hour. People use it for engine ratings, electric motors, and air conditioner or heater capacity.
Every unit is stored in watts. hp is mechanical (imperial) horsepower, 745.699872 W. PS is metric horsepower, 735.49875 W. BTU/h is 0.29307107 W, the unit air conditioners are often rated in.
A 150 hp engine is 111.854981 kW. An engine rated 150 PS is 110.324813 kW, or 147.948011 hp — the two horsepowers differ by about 1.4%.
hp is the imperial horsepower, 550 foot-pounds per second. PS (Pferdestärke) is the metric horsepower used by European carmakers, defined from 75 kilogram-force metres per second. PS is about 1.4% smaller, so the same engine has a slightly higher PS number.
No. kW is a rate, how fast energy is used. kWh is an amount, the energy used by 1 kW over one hour. Use the energy converter for kWh.
Power Converter converts between 6 units: BTU/h, W, PS, hp, kW and MW. Factors are given against W.
| Unit | In W | 1 W equals |
|---|---|---|
| 1 BTU/h | 0.29307107 W | 3.4121416351 BTU/h |
| 1 PS | 735.49875 W | 0.0013596216 PS |
| 1 hp | 745.699872 W | 0.0013410221 hp |
| 1 kW | 1000 W | 0.001 kW |
| 1 MW | 1000000 W | 0.000001 MW |
Common quantities in W, converted. Every value is computed from the factors above, so the chart and the converter cannot disagree.
| W | BTU/h | PS | hp | kW |
|---|---|---|---|---|
| 1 W | 3.4121416351 | 0.0013596216 | 0.0013410221 | 0.001 |
| 2 W | 6.8242832703 | 0.0027192432 | 0.0026820442 | 0.002 |
| 5 W | 17.0607081757 | 0.0067981081 | 0.0067051104 | 0.005 |
| 10 W | 34.1214163513 | 0.0135962162 | 0.0134102209 | 0.01 |
| 25 W | 85.3035408783 | 0.0339905404 | 0.0335255522 | 0.025 |
| 100 W | 341.2141635133 | 0.1359621617 | 0.1341022089 | 0.1 |
1 W is 3.4121416351 BTU/h. To convert W to BTU/h, divide by 0.29307107 — so 10 W is 34.1214163513 BTU/h.
1 BTU/h is 0.29307107 W. To convert BTU/h to W, multiply by 0.29307107 — so 10 BTU/h is 2.9307107 W.
1 W is 0.0013596216 PS. To convert W to PS, divide by 735.49875 — so 10 W is 0.0135962162 PS.
1 PS is 735.49875 W. To convert PS to W, multiply by 735.49875 — so 10 PS is 7354.9875 W.
1 W is 0.0013410221 hp. To convert W to hp, divide by 745.699872 — so 10 W is 0.0134102209 hp.
1 hp is 745.699872 W. To convert hp to W, multiply by 745.699872 — so 10 hp is 7456.99872 W.
1 W is 0.001 kW. To convert W to kW, divide by 1000 — so 10 W is 0.01 kW.
1 kW is 1000 W. To convert kW to W, multiply by 1000 — so 10 kW is 10000 W.
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