Convert 1 Horsepower to Watts
Convert between Horsepower and Watts with step-by-step calculation. 1 Horsepower = 745.6999 Watts.
1 horsepower ≈ 745.7 watts
To convert horsepower to watts, multiply by 745.7.
1 hp × 745.7 W1 hp
≈ 1 × 745.7
≈ 745.6999 W (rounded to 4 decimal places)
1 horsepower ≈ 745.6999 watts
| Horsepower | Watts |
|---|---|
| 1 | 745.7 |
| 2 | 1491.4 |
| 5 | 3728.5 |
| 10 | 7457 |
| 25 | 18642.5 |
| 50 | 37285 |
| 100 | 74570 |
| 250 | 186425 |
| 500 | 372850 |
| 1000 | 745700 |
How to Convert Horsepower to Watts
Multiply horsepower by 745.7 for mechanical horsepower (used for engines).
Formula: watts = hp × 745.7
Types of Horsepower
Mechanical (imperial) hp = 745.7 W. Metric hp (PS) = 735.5 W. Electric hp = 746 W. Car specs usually use mechanical hp in the US and metric hp (PS) in Europe and Japan.
Frequently Asked Questions
How many watts is 1 horsepower?
1 mechanical hp = 745.7 watts ≈ 0.746 kW.
How many hp is a 1500W motor?
1500 W ÷ 745.7 ≈ 2.01 hp.
Why is it called horsepower?
James Watt coined the term in the 1780s to compare steam engine output to draft horses. One hp was defined as the power to lift 550 pounds by 1 foot in 1 second.