Convert Metric Horsepower to Horsepower
1 metric horsepower (PS) equals 0.9863200706 horsepower (hp).
1 PS = 0.9863200706 hp
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk metric horsepower to horsepower converter to paste a column from Excel.
How to Convert Metric Horsepower to Horsepower
- 1 PS = 0.9863200706 hp
- 1 hp = 1.013869665 PS
- Example: convert 15 PS to hp: 15 PS = 15 × 0.9863200706 hp = 14.79480106 hp
Reference conditions. hp: Mechanical (imperial) horsepower, 550 ft·lbf/s. Metric horsepower (PS) is about 1.4 % smaller.
Formula
hp = PS × 0.9863200706195
or hp = PS ÷ 1.013869665424
Derivation from SI units:
- 1 PS = 75 kgf·m/s = 735.49875 W (exact)
- 1 hp = 550 ft·lbf/s = 745.69987158227 W
- 1 PS = 735.49875 W ÷ 745.6998715823 W per hp = 0.9863200706195 hp
Both units are defined exactly, so the factor is exact. Metric Horsepower definition: metric horsepower; Horsepower definition: horsepower.
Worked examples
- A 100 PS engine is 98.63200706 hp.
100 PS × 0.9863200706 = 98.63200706 hp - A 300 PS engine is 295.8960212 hp.
300 PS × 0.9863200706 = 295.8960212 hp
Metric Horsepower to Horsepower conversion table
| Metric Horsepower (PS) | Horsepower (hp) |
|---|---|
| 1 PS | 0.9863200706 hp |
| 50 PS | 49.31600353 hp |
| 75 PS | 73.9740053 hp |
| 100 PS | 98.63200706 hp |
| 110 PS | 108.4952078 hp |
| 150 PS | 147.9480106 hp |
| 200 PS | 197.2640141 hp |
| 250 PS | 246.5800177 hp |
| 300 PS | 295.8960212 hp |
| 500 PS | 493.1600353 hp |
Where it's used
European car figures in PS (CV, ch) are slightly lower when expressed in mechanical horsepower; 1 PS is about 0.986 hp.
Metric Horsepower to other power units
| Conversion | 1 PS equals |
|---|---|
| metric horsepower to watt | 735.49875 W |
| metric horsepower to milliwatt | 735498.75 mW |
| metric horsepower to kilowatt | 0.73549875 kW |
| metric horsepower to megawatt | 0.00073549875 MW |
| metric horsepower to horsepower | 0.9863200706 hp |
| metric horsepower to BTU per hour | 2509.625906 BTU/h |
| metric horsepower to refrigeration ton | 0.2091354922 TR |
| metric horsepower to kilocalorie per hour | 632.4150903 kcal/h |
| metric horsepower to foot-pound per second | 542.4760388 ft·lbf/s |
Frequently asked questions
Is PS the same as hp?
No. 1 PS = 735.49875 W and 1 hp = 745.69987 W, so 1 PS = 0.98632 hp.
How many horsepower are in 1 metric horsepower?
1 PS = 0.9863200706 hp.
How do I convert metric horsepower to horsepower?
Multiply the value in PS by 0.9863200706, or divide it by 1.013869665. For example, 15 PS × 0.9863200706 = 14.79480106 hp.
Is the PS to hp conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "horsepower (metric)".
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "horsepower (550 ft·lbf/s)".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Metric Horsepower to Horsepower. Retrieved October 17, 2026, from https://scientificconverters.com/power/metric-horsepower-to-horsepower/
IEEE
Scientific Converters, "Convert Metric Horsepower to Horsepower," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/power/metric-horsepower-to-horsepower/