Convert Metric horsepower to Horsepower
1 metric horsepower is 0.98632 hp. One metric horsepower is exactly 0.98632007062 horsepower.
One metric horsepower is 0.98632007 horsepower. To convert metric horsepower to horsepower, multiply by 0.98632007; to go the other way, divide by 0.98632007 or multiply by 1.0138697. The factor is exact rather than rounded: it follows from NIST Special Publication 811. Exactly 75 kilogram-force metres a second, which is 1.4% less than mechanical horsepower.
Factor checked against the defining standard · How we check
- Metric horsepower × 0.98632007
value * 0.986320070620.986 hp
1 metric horsepower in every power unit
| Unit | Value | Exact factor |
|---|---|---|
| horsepower | 0.9863200706 hp | × 0.98632007062 |
| metric horsepower (as entered) | 1 PS | — |
| watts | 735.49875 W | × 735.49875 |
| kilowatts | 0.73549875 kW | × 0.73549875 |
| megawatts | 0.00073549875 MW | × 0.00073549875 |
| BTU per hour | 2,509.625906 BTU/h | × 2,509.62590599 |
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 metric horsepower to horsepower?
- 1.Take the measurement in metric horsepower.
- 2.Multiply by 0.98632007 — that is how many horsepower fit in one metric horsepower.
- 3.To go back the other way, divide by 0.98632007, or multiply by 1.0138697.
Worked example: 25 metric horsepower to horsepower
- Formula
- PS × 0.98632007 = hp
- Arithmetic
- 25 × 0.98632007 = 24.658002 hp
- Answer
- 25 PS = 24.658002 hp
The factor is rounded for display; the figure above is computed from the full value.
Metric horsepower to horsepower conversion table
| Metric horsepower | Horsepower |
|---|---|
| 1 PS | 0.98632 hp |
| 2 PS | 1.97264 hp |
| 3 PS | 2.95896 hp |
| 4 PS | 3.94528 hp |
| 5 PS | 4.9316 hp |
| 6 PS | 5.91792 hp |
| 7 PS | 6.90424 hp |
| 8 PS | 7.890561 hp |
| 9 PS | 8.876881 hp |
| 10 PS | 9.863201 hp |
| 12 PS | 11.835841 hp |
| 15 PS | 14.794801 hp |
| 20 PS | 19.726401 hp |
| 25 PS | 24.658002 hp |
| 50 PS | 49.316004 hp |
| 100 PS | 98.632007 hp |
| 200 PS | 197.264014 hp |
| 300 PS | 295.896021 hp |
| 500 PS | 493.160035 hp |
| 1000 PS | 986.320071 hp |
| 2000 PS | 1,972.640141 hp |
| 5000 PS | 4,931.600353 hp |
| 10000 PS | 9,863.200706 hp |
What is a metric horsepower?
Exactly 75 kilogram-force metres a second, which is 1.4% less than mechanical horsepower. A German car quoted at 150 PS is 148 hp, and the difference is the definition rather than the engine.
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.
How many horsepower are in a metric horsepower?
One metric horsepower is 0.98632007 horsepower. Going the other way, one horsepower is 1.0138697 metric 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 horsepower are in a metric horsepower?
- 0.98632007. 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.
- How do I convert horsepower back to metric horsepower?
- Divide by 0.98632007, or multiply by 1.0138697 — they are the same operation.
Other power conversions
Horsepower to metric horsepower — the same conversion the other way.