Horsepower to Megawatts
Mechanical horsepower, about 745.7 watts, is the traditional unit for rating car and engine power in the US and UK. A megawatt is one million watts, the scale used to describe power plant and wind farm output. 1 hp equals ≈0.0007457 MW, so converting between them is a matter of multiplying by that fixed factor — type any value into the converter below and both sides update instantly as you type.
Both units belong to power, measured here against power's base unit (W) — every other power unit on this site converts through that same reference point, which is why the table below can also be read as a quick cross-check against nearby values.
Formula
MW = hp × ≈0.0007457
hp = MW × ≈1,341.02
Worked example: 5 hp × ≈0.0007457 = ≈0.0037285 MW.
Conversion table
| Horsepower (mech.) (hp) | Megawatt (MW) |
|---|---|
| 1 hp | ≈0.0007457 MW |
| 2 hp | ≈0.0014914 MW |
| 3 hp | ≈0.0022371 MW |
| 5 hp | ≈0.0037285 MW |
| 10 hp | ≈0.007457 MW |
| 20 hp | ≈0.014914 MW |
| 25 hp | ≈0.0186425 MW |
| 50 hp | ≈0.037285 MW |
| 100 hp | ≈0.07457 MW |
| 250 hp | ≈0.186425 MW |
| 500 hp | ≈0.37285 MW |
| 1,000 hp | ≈0.7457 MW |
Frequently asked
- How many Megawatts in a horsepower (mech.)?
- 1 hp equals ≈0.0007457 MW.
- How do I convert Horsepower to Megawatts?
- Multiply the value in hp by ≈0.0007457 to get MW. The converter above does this instantly as you type.
- Is the conversion exact?
- Yes — Horsepower (mech.) and Megawatt are both defined by a fixed conversion factor to power's base unit (W), so the result shown is exact to the precision displayed, not an approximation.