How to convert horsepower to metric horsepower
One horsepower equals 1.0139 metric horsepower, so multiply the number of horsepower by 1.0139:
PS = hp × 1.0139
hp = PS ÷ 1.0139 (1 PS = 0.98632 hp)
Example: 100 hp → 100 × 1.0139 = 101.387 PS.
Going the other way, divide by 1.0139, or multiply by 0.98632; the metric horsepower to horsepower converter does it for you.
Everyday values
| Horsepower | Metric horsepower | For example |
|---|---|---|
| 100 hp | 101.387 PS | 100 hp |
| 200 hp | 202.774 PS | 200 hp |
| 500 hp | 506.935 PS | 500 hp |
When you need this conversion
Multiply hp by 1.0139 to get PS. The difference is small, about 1.4%, but on powerful engines it adds up: 500 hp is 507 PS.
Horsepower to metric horsepower conversion table
| hp | PS | hp | PS |
|---|---|---|---|
| 10 hp | 10.1387 PS | 110 hp | 111.526 PS |
| 20 hp | 20.2774 PS | 120 hp | 121.664 PS |
| 30 hp | 30.4161 PS | 130 hp | 131.803 PS |
| 40 hp | 40.5548 PS | 140 hp | 141.942 PS |
| 50 hp | 50.6935 PS | 150 hp | 152.08 PS |
| 60 hp | 60.8322 PS | 160 hp | 162.219 PS |
| 70 hp | 70.9709 PS | 170 hp | 172.358 PS |
| 80 hp | 81.1096 PS | 180 hp | 182.497 PS |
| 90 hp | 91.2483 PS | 190 hp | 192.635 PS |
| 100 hp | 101.387 PS | 200 hp | 202.774 PS |
About the units
- Horsepower (hp): mechanical horsepower, 550 foot-pounds per second, about 745.7 W.
- Metric horsepower (PS): 75 kilogram-force metres per second, exactly 735.49875 W (also CV or pk).
Both are units of power. The conversion factor comes from the exact definitions above, so the calculator is exact; results are only rounded for display (up to six significant digits).
Frequently asked questions
How many metric horsepower are in one horsepower?
One horsepower is 1.0139 metric horsepower. One metric horsepower is 0.98632 horsepower.
How do I convert horsepower to metric horsepower?
Multiply the value in horsepower by 1.0139. To go back, divide by 1.0139.
What is 100 hp in metric horsepower?
100 hp = 101.387 PS.
What is 200 hp in metric horsepower?
200 hp = 202.774 PS.
Sources
- NIST Special Publication 811 (2008), Guide for the Use of the International System of Units (SI), Appendix B: conversion factors.
- NIST Handbook 44 (2024), Appendix C: General tables of units of measurement.
Last reviewed 5 October 2026. Results are estimates; see our disclaimer.