Horsepower to Metric HP (PS) (Horsepower to Metric HP (PS))
Result
1.013869665 Metric HP (PS)
Formula
Metric HP (PS) = Horsepower × 1.013869665
1 Horsepower = 1.013869665 Metric HP (PS), and 1 Metric HP (PS) = 0.9863200706 Horsepower.
Fuel economy is converted through the US gallon (3.785411784 L) and imperial gallon (4.54609 L): L/100 km = 235.215 ÷ mpg (US). Power uses mechanical horsepower and metric horsepower (PS = 735.49875 W). Torque uses 1 lb·ft = 1.3558179 N·m.
Worked examples
- 1 Horsepower × 1.013869665 = 1.0138697 Metric HP (PS)
- 10 Horsepower × 1.013869665 = 10.138697 Metric HP (PS)
- 100 Horsepower × 1.013869665 = 101.38697 Metric HP (PS)
Common mistakes
- L/100 km is inverse to mpg — lower is better — so it does not scale linearly: going from 10 to 20 mpg saves far more fuel than going from 40 to 50.
- UK and US mpg differ because the imperial gallon is 20% larger: 40 mpg (UK) is 33.3 mpg (US).
- Car makers in Europe and Japan usually quote PS, not horsepower; 100 PS is 98.6 hp.
Horsepower to Metric HP (PS) table
| Horsepower (Horsepower) | Metric HP (PS) (Metric HP (PS)) |
|---|---|
| 1 | 1.0138697 |
| 2 | 2.0277393 |
| 5 | 5.0693483 |
| 10 | 10.138697 |
| 20 | 20.277393 |
| 50 | 50.693483 |
| 100 | 101.38697 |
| 1,000 | 1,013.8697 |
The units
- Horsepower (Horsepower)
- A unit of automotive.
- Metric HP (PS) (Metric HP (PS))
- A unit of automotive.
Sources for these factors
- Handbook 44 (2024), Appendix C: General Tables of Units of Measurement — NIST
- Guide for the Use of the International System of Units (SP 811), Appendix B: conversion factors — NIST
Last reviewed against these sources. An automated check recomputes every factor from its definition on each build. How we check accuracy