ENERGY
Power
Rate of work, heat transfer and machinery output.
Try a decimal, 1e-9, 1/3, or 5 1/2.
Result0.00134102 hp1 W = 0.00134102 hp
EVERYDAY · ENGINEERING · SCIENCE
W to hp Converter
Convert watt (W) to mechanical horsepower (hp). Enter a value for an instant result, or use the examples and reverse conversion below.
520units ready to convert
HOW IT IS CALCULATED
Convert through watt
Enter a watt value to calculate mechanical horsepower with full internal precision before display rounding.
Display PrecisionAuto · 6 significant digits
Auto trims unnecessary zeroes and uses scientific notation for extreme magnitudes. Use Digits to set the display precision; calculations retain full precision.
QUICK REFERENCE
All units in this quantity
| Unit | Symbol | Converted value |
|---|---|---|
| milliwattfrom W | mW | 1000 |
| wattfrom W | W | 1 |
| kilowattfrom W | kW | 0.001 |
| megawattfrom W | MW | 0.000001 |
| gigawattfrom W | GW | 0.000000001 |
| mechanical horsepowerfrom W | hp | 0.00134102 |
| metric horsepowerfrom W | PS | 0.00135962 |
| electrical horsepowerfrom W | hp(E) | 0.00134048 |
| boiler horsepowerfrom W | hp(S) | 0.000101942 |
| foot pound-force per secondfrom W | ft·lbf/s | 0.737562 |
| British thermal unit per hourfrom W | BtuIT/h | 3.41214 |
| ton of refrigerationfrom W | TR | 0.000284345 |
SI symbols follow international notation. U.S. and Imperial measures are labelled separately where their values differ.
W to hp Conversion Reference
Watt (W) and mechanical horsepower (hp) are units of power. Use this page to convert in either direction.
Conversion Examples
| Watt (W) | Mechanical Horsepower (hp) |
|---|---|
| 1 W | 0.00134102 hp |
| 5 W | 0.00670511 hp |
| 10 W | 0.0134102 hp |
| 100 W | 0.134102 hp |
Examples are rounded to 6 significant digits. The interactive converter retains full calculation precision; change Display Precision to see more digits.
Reverse Conversion
hp to W (mechanical horsepower to watt)
Related Power Conversions
W to mW (watt to milliwatt)W to kW (watt to kilowatt)W to MW (watt to megawatt)W to GW (watt to gigawatt)W to PS (watt to metric horsepower)W to hp(E) (watt to electrical horsepower)W to hp(S) (watt to boiler horsepower)W to ft·lbf/s (watt to foot pound-force per second)W to BtuIT/h (watt to British thermal unit per hour)W to TR (watt to ton of refrigeration)