How do I convert Watt (W) to Horsepower (metric)?

1 w equals 0.00136 hp using SI-based conversion and precise factors.

What is the formula to convert Watt (W) to Horsepower (metric)?

This is a linear unit conversion using a constant factor between units.

Yes, it uses exact definitions or standardized constants (e.g., 1 in = 25.4 mm).

Use the shareable URL pattern: /convert/w-to-hp/1

Category: Power

Value From To Precision

0.00136 hp

1 w = 0.00136 hp

High-precision rounding: 6 decimals

We convert by pivoting through the SI base unit for Power and applying exact factors where applicable.

Share this conversion: /convert/w-to-hp/1

Power is rate of energy transfer; watts and horsepower dominate.

Watt (W)

SI power unit; J/s.

History: Named after James Watt.

Horsepower (metric)

≈ 735.49875 W.

History: Coined in 18th c. by James Watt for marketing steam engines.