Metric Horsepower (PS) to Watts Converter
Enter a value to instantly convert between power units.
1 Horsepower (metric) = 735.4987 Watt
Key Formulas
Kilowatt → Horsepower (mech)
hp = kW × 1.34102Horsepower (mech) → Kilowatt
kW = hp × 0.7457Watt → Kilowatt
kW = W × 0.001Kilowatt → Watt
W = kW × 1000Formula
W = PS × 735.49875One metric horsepower (Pferdestarke, PS) equals exactly 735.49875 watts. This is the standard power unit in European automotive and industrial specifications, slightly weaker than mechanical horsepower (745.7 W). Converting to SI watts enables cross-border engineering collaboration and equipment standardization when merging European and international specifications.
Source: NIST SP 811, Table B.8
Frequently Asked Questions
Real-World Examples
Engineering definition: 1 PS = 75 kilogram-force×meter/second = 735.5 W exactly.
1 PS = 735.49875 W
European compact car engine rated 100 PS = 73.55 kW for international technical documentation.
100 PS = 73549.875 W
Performance sedan engine 250 PS = 183.9 kW (257.5 mechanical hp) for cross-market comparison.
250 PS = 183874.6875 W
Small motorcycle engine 50 PS = 36.8 kW for EU vehicle emissions and efficiency standards.
50 PS = 36774.9375 W