Convert Horsepower to Watt (hp to W)
Instant precision conversion from Horsepower (hp) to Watt (W) in Power.
⚡ Direct Answer: 1 hp to W
1 Horsepower (hp) equals exactly 745.7 Watt (W).
To convert from Horsepower to Watt, multiply the quantity by 745.7 (or divide by 0.001341).
📐 How Horsepower (hp) and Watt (W) Relate
In metrology, power quantifies rate of energy transfer or work performed per unit time ($E/T$). Within this domain, Horsepower (hp) and Watt (W) originate from SI watts/kilowatts and imperial/mechanical horsepower. Mechanical horsepower is defined as 550 ft·lbf/s (approximately 745.69987 W).
Because both Horsepower and Watt belong to the linear power domain, conversion between them is strictly proportional. The exact conversion factor (745.7) guarantees zero precision drift across mathematical calculations.
🎯 Common Practical Applications
Small Engine & Consumer Appliance Engineering
Converting lawnmower, snowblower, and shop vac power ratings into electrical wattage equivalents.
Exercise Ergometer & Human Power Testing
Measuring athletic sprint power output on cycling ergometers relative to fractional mechanical horsepower.
Fluid Pump & Air Compressor Calculations
Determining electrical motor input wattage needed to deliver fluid mechanical horsepower.
Reverse Conversion Option
Need to convert other power units? Explore all combinations in the full Power converter.
Horsepower to Watt Conversion Table (1 to 1000)
| Horsepower (hp) | Watt (W) | Watt (W) | Horsepower (hp) |
|---|---|---|---|
| 1 hp | 745.7 W | 1 W | 0.001341 hp |
| 2 hp | 1491.4 W | 2 W | 0.002682 hp |
| 3 hp | 2237.1 W | 3 W | 0.004023 hp |
| 5 hp | 3728.5 W | 5 W | 0.006705 hp |
| 10 hp | 7457 W | 10 W | 0.01341 hp |
| 15 hp | 11185.5 W | 15 W | 0.020115 hp |
| 20 hp | 14914 W | 20 W | 0.02682 hp |
| 25 hp | 18642.5 W | 25 W | 0.033526 hp |
| 50 hp | 37285 W | 50 W | 0.067051 hp |
| 75 hp | 55927.5 W | 75 W | 0.100577 hp |
| 100 hp | 74570 W | 100 W | 0.134102 hp |
| 250 hp | 186425 W | 250 W | 0.335255 hp |
| 500 hp | 372850 W | 500 W | 0.670511 hp |
| 1000 hp | 745700 W | 1000 W | 1.341022 hp |
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Frequently Asked Questions
How many Watt in 1 Horsepower?
1 Horsepower (hp) equals exactly 745.7 Watt (W). 1 Watt (W) equals approximately 0.001341 Horsepower (hp). Formula: hp ≈ W × 0.00134102.
How to convert Horsepower to Watt?
To convert from Horsepower to Watt, multiply the quantity by 745.7 (or divide by 0.001341). Mathematical formula: W = hp × 745.7.
What is an example calculation converting Horsepower to Watt?
To convert 10 Horsepower to Watt: multiply 10 by the conversion factor 745.7 to get exactly 7457 Watt (W).
How to convert back from Watt to Horsepower?
To convert from Watt to Horsepower, multiply by the inverse factor 0.001341 (or divide by 745.7). Formula: hp = W × 0.00134102.