Use this free, accurate horsepower (mechanical / imperial) to watt calculator to convert between Horsepower (Mechanical / Imperial) (hp) and Watt (W). Includes live instant results, complete mathematical formulas, conversion tables, and step-by-step examples.
745.6998716 Watt
1 hp is equal to 745.699872 W.
W = hp × 745.69987158
power Converters
To convert from Horsepower (Mechanical / Imperial) to Watt, multiply the value in Horsepower (Mechanical / Imperial) by 745.699872 (or use the formula: W = hp × 745.699872).
Take your initial measurement in Horsepower (Mechanical / Imperial) (hp). For instance, let's convert 1 hp.
Multiply by the standard conversion factor (745.699872).
The final converted measurement equals 745.699872 Watt (W).
Compare standard reference values and common conversion benchmarks.
| Horsepower (Mechanical / Imperial) (hp) | Watt (W) | Action |
|---|---|---|
| 1 hp | 745.69987 W | |
| 2 hp | 1491.39974 W | |
| 3 hp | 2237.09961 W | |
| 5 hp | 3728.49936 W | |
| 10 hp | 7456.99872 W | |
| 15 hp | 11185.49807 W | |
| 20 hp | 14913.99743 W | |
| 25 hp | 18642.49679 W | |
| 50 hp | 37284.99358 W | |
| 75 hp | 55927.49037 W | |
| 100 hp | 74569.98716 W | |
| 250 hp | 186424.9679 W | |
| 500 hp | 372849.93579 W | |
| 1000 hp | 745699.87158 W |
Official standards, measurement systems, and real-world everyday applications.
Mechanical (Imperial) horsepower is a customary power unit equal to approx 745.7 watts (550 ft·lbf/s).
Common Practical Uses
A watt is the SI derived unit of power equal to one joule of energy per second (1 J/s).
Common Practical Uses
Calculate from Watt (W) back to Horsepower (Mechanical / Imperial) (hp).
Frequently used unit conversions in this category:
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There are 745.699872 watts in 1 horsepower. Exactly 1 hp is equal to 745.699872 W.
The conversion formula is: Watt = W = hp × 745.69987158. Applying this to 1 hp gives: 1 × 745.699872 = 745.699872 W.
To convert in reverse from watts to horsepower, multiply by the inverse factor: 1 W = 0.001341 hp. Alternatively, divide your Watt amount by 745.699872.
To calculate in your head, round the conversion multiplier (745.7) to the nearest easy whole or decimal number.
Horsepower (Mechanical / Imperial) (hp) belongs to the US customary and Imperial system, commonly used in Automotive engine specs in North America, Lawn mowers, Outboard boat motors. In comparison, Watt (W) is part of the Metric (SI) system, frequently applied in Light bulbs, Computer power supplies, Solar panel ratings.
Key milestones include: 1 hp = 745.699872 W, 5 hp = 3728.4994 W, 10 hp = 7456.9987 W, 50 hp = 37284.9936 W, and 100 hp = 74569.9872 W.