Horsepower to metric horsepower
Multiply horsepower by 1.0139 to get metric horsepower.
200 hp = 202.7739 PS
How to convert horsepower to metric horsepower
The metric horsepower is metric horsepower (PS/CV), about 735.50 watts — slightly less than mechanical hp. The horsepower is mechanical (imperial) horsepower, about 745.70 watts.
Worked example — 200 hp: 200 × 1.0139 = 202.7739 PS.
Horsepower to metric horsepower table
| Horsepower | Metric horsepower |
|---|---|
| 1 hp | 1.0139 PS |
| 50 hp | 50.6935 PS |
| 100 hp | 101.387 PS |
| 150 hp | 152.0804 PS |
| 200 hp | 202.7739 PS |
| 250 hp | 253.4674 PS |
| 300 hp | 304.1609 PS |
| 400 hp | 405.5479 PS |
| 500 hp | 506.9348 PS |
Reverse and related
About horsepower and metric horsepower
Horsepower (hp)
1 hp = 1.0139 PSDefinition. Mechanical (imperial) horsepower, about 745.70 watts
History and origin
Horsepower was coined by James Watt in the 1780s to compare his steam engines to the draught horses they replaced, based on the work a horse could do. Mechanical horsepower is about 745.7 watts.
Current use
Horsepower rates car and engine power in the United States and United Kingdom.
Source: NIST SP 811, App. B (power). Mechanical hp = 550 ft·lbf/s ≈ 745.70 W; metric hp (PS) = 75 kgf·m/s = 735.49875 W
Metric horsepower (PS)
1 PS = 0.98632 hpDefinition. Metric horsepower (PS/CV), about 735.50 watts — slightly less than mechanical hp
History and origin
Metric horsepower, also called PS or CV, was defined in continental Europe as the power to raise 75 kilograms by one metre in one second, about 735.5 watts. It is slightly less than mechanical horsepower.
Current use
Metric horsepower is used to state car engine power in Europe and Japan.
Source: NIST SP 811, App. B (power). Mechanical hp = 550 ft·lbf/s ≈ 745.70 W; metric hp (PS) = 75 kgf·m/s = 735.49875 W
Where people use this
Horsepower: car and engine power in the US/UK. Metric horsepower: car power in Europe and Japan. 1 mechanical hp is about 1.014 metric hp (PS).
Every value is carried to full double precision; the display is rounded.
Both units are defined in NIST SP 811, App. B (power). Mechanical hp = 550 ft·lbf/s ≈ 745.70 W; metric hp (PS) = 75 kgf·m/s = 735.49875 W.
Questions people ask
What is the difference between hp and PS?
Mechanical horsepower is about 745.7 W; metric hp (PS) is 735.5 W, so 1 hp is about 1.014 PS.
How many PS is 100 hp?
100 hp is about 101.4 PS.
Are hp and PS the same?
Nearly — PS is about 1.4% smaller, so figures in PS read a little higher than in hp.