Mechanical horsepower to Watts formula
watts = mechanical horsepower × 745.7
Multiply the number of mechanical horsepower by 745.7 to get watts. To go the other way, multiply by 0.00134102 instead, or use the watts to hp converter.
Mechanical horsepower to Watts conversion table
Common hp to watts values, rounded for reading. The converter above keeps full precision.
| Mechanical horsepower | Watts |
|---|---|
| 1 hp | 745.7 W |
| 10 hp | 7,457 W |
| 50 hp | 37,285 W |
| 100 hp | 74,570 W |
| 250 hp | 186,425 W |
| 500 hp | 372,850 W |
| 750 hp | 559,275 W |
| 1,000 hp | 745,700 W |
| 1,500 hp | 1,118,550 W |
| 2,000 hp | 1,491,400 W |
| 5,000 hp | 3,728,500 W |
| 10,000 hp | 7,457,000 W |
| 12,000 hp | 8,948,400 W |
| 18,000 hp | 13,422,600 W |
| 24,000 hp | 17,896,800 W |
Worked example
To convert 500 hp to watts, multiply by 745.7: the result is 372,850 W. Mechanical horsepower and metric horsepower are different units. BTU per hour is a power rate; BTU by itself is energy.
Frequently asked questions
How many watts are in a mechanical horsepower?
One mechanical horsepower equals 745.7 watts (1 hp = 745.7 W).
What is 500 mechanical horsepower in watts?
500 hp converts to 372,850 W. Enter any other value in the converter above to see it recalculated instantly.
How do I convert watts back to mechanical horsepower?
Reverse the calculation: one watt equals 0.00134102 mechanical horsepower. You can also swap the units in the converter or open the watts to hp page.
Related power conversions
Need a different pair? Open the full power converter to choose any two units.