Convert Horsepower to Megawatts
1 horsepower is 0.000746 MW. One horsepower is exactly 0.000745699871582 megawatts.
One horsepower is 7.4570 × 10^-4 megawatts. To convert horsepower to megawatts, multiply by 7.4570 × 10^-4; to go the other way, divide by 7.4570 × 10^-4 or multiply by 1341.0221. The factor is exact rather than rounded: it follows from NIST Special Publication 811. Mechanical horsepower: exactly 550 foot-pounds of work every second, the figure James Watt settled on to sell engines against pit ponies.
Factor checked against the defining standard · How we check
- Horsepower × 7.4570 × 10^-4
value * 0.0007456998715820.001 MW
1 horsepower in every power unit
| Unit | Value | Exact factor |
|---|---|---|
| horsepower (as entered) | 1 hp | — |
| metric horsepower | 1.013869665 PS | × 1.01386966542 |
| watts | 745.6998716 W | × 745.699871582 |
| kilowatts | 0.7456998716 kW | × 0.745699871582 |
| megawatts | 0.0007456998716 MW | × 0.000745699871582 |
| BTU per hour | 2,544.433578 BTU/h | × 2,544.43357764 |
Factors are entered by hand from NIST Special Publication 811 rather than derived from a units library, so the ones that terminate are exact rather than rounded.
How do you convert horsepower to megawatts?
- 1.Take the measurement in horsepower.
- 2.Multiply by 7.4570 × 10^-4 — that is how many megawatts fit in one horsepower.
- 3.To go back the other way, divide by 7.4570 × 10^-4, or multiply by 1341.0221.
Worked example: 25 horsepower to megawatts
- Formula
- hp × 7.4570 × 10^-4 = MW
- Arithmetic
- 25 × 7.4570 × 10^-4 = 0.018642 MW
- Answer
- 25 hp = 0.018642 MW
The factor is rounded for display; the figure above is computed from the full value.
Horsepower to megawatts conversion table
| Horsepower | Megawatts |
|---|---|
| 1 hp | 0.000746 MW |
| 2 hp | 0.001491 MW |
| 3 hp | 0.002237 MW |
| 4 hp | 0.002983 MW |
| 5 hp | 0.003728 MW |
| 6 hp | 0.004474 MW |
| 7 hp | 0.00522 MW |
| 8 hp | 0.005966 MW |
| 9 hp | 0.006711 MW |
| 10 hp | 0.007457 MW |
| 12 hp | 0.008948 MW |
| 15 hp | 0.011185 MW |
| 20 hp | 0.014914 MW |
| 25 hp | 0.018642 MW |
| 50 hp | 0.037285 MW |
| 100 hp | 0.07457 MW |
| 200 hp | 0.14914 MW |
| 300 hp | 0.22371 MW |
| 500 hp | 0.37285 MW |
| 1000 hp | 0.7457 MW |
| 2000 hp | 1.4914 MW |
| 5000 hp | 3.728499 MW |
| 10000 hp | 7.456999 MW |
What is a horsepower?
Mechanical horsepower: exactly 550 foot-pounds of work every second, the figure James Watt settled on to sell engines against pit ponies. US vehicle and motor ratings use it.
What is a megawatt?
A million watts. Generating plant and grid capacity are quoted in it: one megawatt runs roughly 750 homes in the US at average draw.
How many megawatts are in a horsepower?
One horsepower is 7.4570 × 10^-4 megawatts. Going the other way, one megawatt is 1341.0221 horsepower. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every power unit here
| Unit | Symbol | One of these is |
|---|---|---|
| Horsepower | hp | 745.69987 watt |
| Metric horsepower | PS | 735.49875 watt |
| Watts | W | the base unit |
| Kilowatts | kW | 1000 watt |
| Megawatts | MW | 1000000 watt |
| BTU per hour | BTU/h | 0.29307107 watt |
Source: NIST Special Publication 811 — mechanical horsepower is 550 ft·lbf/s exactly
Questions people actually ask
- How many megawatts are in a horsepower?
- 7.4570 × 10^-4. A million watts. Generating plant and grid capacity are quoted in it: one megawatt runs roughly 750 homes in the US at average draw.
- How do I convert megawatts back to horsepower?
- Divide by 7.4570 × 10^-4, or multiply by 1341.0221 — they are the same operation.
Other power conversions
Megawatts to horsepower — the same conversion the other way.