Convert hp to w Instantly & Accurately
Convert hp to w instantly with our accurate online calculator. Perfect for engineers and students needing reliable horsepower to watts conversion.
Horsepower (Mechanical)
Watt
How to convert hp to w
Transform any horsepower value into watts in three quick steps.
Enter Your Horsepower Value
Type the horsepower number into the input field. Accepts decimals for precise calculations.
Select the HP Standard
Choose between mechanical, metric, or electrical horsepower based on your source data.
Get the Watts Result
The converter instantly displays the equivalent power output in watts with full accuracy.
Why use this hp to w Converter?
Engineered for precision, speed, and real-world engineering tasks.
The Mathematical Formula
W = HP × 745.7 for mechanical horsepower, or HP × 735.5 for metric standards. This tool applies the correct factor automatically.
Supports Multiple HP Types
Handles mechanical, metric, and electrical horsepower conversions without manual calculations.
Instant and Reliable Results
No signup required, works on any device, and delivers accurate results in milliseconds.
Quick Reference
| Horsepower (Mechanical) | Watt |
|---|---|
| 1 hp | 745.6999 w |
| 2 hp | 1491.3997 w |
| 5 hp | 3728.4994 w |
| 10 hp | 7456.9987 w |
| 20 hp | 14913.9974 w |
| 50 hp | 37284.9936 w |
Practical Examples of hp to w
Real-world scenarios where this conversion is useful.
Automotive Engine Output
A 200 hp car engine produces roughly 149,140 watts of mechanical power.
Electric Motor Specification
A 5 hp industrial motor delivers approximately 3,727.5 watts of usable power.
Lawn Equipment Rating
A 3.5 hp lawnmower engine generates about 2,610 watts at peak performance.
Backup Generator Capacity
A 10 hp generator provides around 7,457 watts of electrical output capacity.
Frequently Asked Questions
Common queries regarding this specific conversion.
Q.What is the formula to convert hp to w?
Multiply the horsepower value by 745.7 for mechanical hp, 735.5 for metric hp, or 746 for electrical hp.
Q.How many watts equal one horsepower?
One mechanical horsepower equals exactly 745.7 watts under standard conditions.
Q.Is metric horsepower different from mechanical horsepower?
Yes. Metric horsepower equals 735.5 watts, while mechanical horsepower equals 745.7 watts.
Q.Why do engineers convert hp to w?
Watts are the SI standard unit for power, making them essential for international engineering specifications and electrical system design.
Discover Related Tools
Need to convert back? Use the reverse Watt to Horsepower (Mechanical) calculator. For other measurements, explore our complete suite of Power & Electricity Converters or the full Unit Converter Hub.