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 × 735.49875European car manufacturers, motorcycle regulators, and industrial equipment catalogues rate power in PS. Converting to watts is required for EU type-approval documents, international export specs, and comparison with US or Asian markets. A 200 PS sports car produces 200 × 735.5 = 147,100 W = 147.1 kW — the figure that appears on official EU vehicle certificates.
Source: NIST SP 811, Table B.8
Last reviewed: · see our methodology
Frequently Asked Questions
Real-World Examples
1 PS = exactly 735.49875 W — defined as 75 kgf·m/s, the metric horsepower standard used across European industry.
1 PS = 735.5 W
A 100 PS family hatchback = 73,550 W = 73.55 kW — equivalent to about 98.6 US mechanical hp.
100 PS = 73550 W
A 300 PS turbocharged sedan = 220,650 W = 220.7 kW — the kind of power found in BMW M3 and Audi S4 class vehicles.
300 PS = 220650 W
47.6 PS = 35,003 W = 35 kW — the EU A2 motorcycle licence limit, marking the boundary between restricted and unrestricted riding.
47.6 PS = 35003 W