Live Converter
Convert Power Online
Enter your value above to convert horsepower (water) units to watts or vice versa.
Real-World Examples
The Uses of Horsepower (Water) units to Watts Conversion
Water horsepower is a traditional unit for rating hydraulic pumps and waterwheels, so this conversion is most useful when comparing against an electric motor or electrical supply figure given in watts.
Rating Hydraulic Pump Output
Hydraulic engineers who design pump systems with individual components rated in watts convert a pump's combined hydraulic output into water horsepower to match historical hydraulic engineering conventions.
Comparing Waterwheel and Turbine Specifications
Engineers restoring historical waterwheels or small hydroelectric turbines rated in water horsepower convert the figure into watts to compare against modern electric generator specifications.
Checking Irrigation Pump System Capacity
Agricultural engineers who size irrigation pump systems, calculated in watts from flow and pressure data, convert the figure into water horsepower to match traditional pump industry rating conventions.
Quick Reference
Comprehensive Conversion Table
Our quick table gives you instant results, so you don't have to calculate these common values manually.
| Conversion | Formula | Result (W) |
|---|---|---|
| 1 whp to W | 1 × 746.043 | 746.04 W |
| 2 whp to W | 2 × 746.043 | 1,492.09 W |
| 3 whp to W | 3 × 746.043 | 2,238.13 W |
| 5 whp to W | 5 × 746.043 | 3,730.22 W |
| 10 whp to W | 10 × 746.043 | 7,460.43 W |
| 20 whp to W | 20 × 746.043 | 14,920.86 W |
| 50 whp to W | 50 × 746.043 | 37,302.15 W |
| 100 whp to W | 100 × 746.043 | 74,604.30 W |
| 500 whp to W | 500 × 746.043 | 373,021.50 W |
Got Questions?
Frequently Asked Questions
How many watts are in 1 horsepower (water)?
1 horsepower (water) equals 746.043 watts, a figure useful for anyone working at the hydraulic pump and waterwheel power ratings scale.
How many horsepower (water) units are in 1 watt?
1 watt equals approximately 0.00134041 horsepower (water)s, which puts the size of a single watt into perspective against the horsepower (water).
Why would anyone convert water horsepower to watts?
This comes up whenever a hydraulic pump, waterwheel, or irrigation system rated in water horsepower needs to be compared against an electric motor or electrical supply figure in watts.
How is water horsepower different from mechanical horsepower?
Water horsepower (746.043 watts) is based on the specific power needed to move water under standard conditions, making it very slightly larger than the mechanical horsepower's 745.70 watts.