Watt (W)
The watt is the SI unit of power — one joule of energy transferred per second.
Watts rate light bulbs, appliance nameplates, solar panels, and electrical device consumption.
Watt to Horsepower (Mechanical / UK)
Convert watt to horsepower (mechanical / uk) instantly. Type in either field — results update live.
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Power Watt Horsepower (Mechanical / UK)
1 watt = 0.0013410221 horsepower (mechanical)
Unit
Unit
Conversion table
Selected W values converted to hp using the exact factor from this tool.
| W | hp |
|---|---|
| 0.01 | 0.0000134102 |
| 0.1 | 0.0001341022 |
| 1 | 0.0013410221 |
| 2 | 0.0026820442 |
| 3 | 0.0040230663 |
| 5 | 0.0067051104 |
| 10 | 0.0134102209 |
| 20 | 0.0268204418 |
| 50 | 0.0670511045 |
| 100 | 0.134102209 |
| 1,000 | 1.3410220896 |
How to convert
Exact conversion factors in both directions, plus a worked example.
1 W = 0.0013410221 hp
1 hp = 745.6998715823 W
To convert watt to horsepower (mechanical / uk), multiply by 0.0013410221.
To convert horsepower (mechanical / uk) to watt, multiply by 745.6998715823.
Example: convert 10 W to hp
10 × 0.0013410221 = 0.0134102209 hp
About these units
Short background on the units used in this conversion.
Horsepower (Mechanical / UK) (hp)
Mechanical (imperial) horsepower equals 745.6998715823 watts — James Watt’s comparison to draft horses.
This hp rating appears on US car engines, lawn mowers, and industrial motors unless labeled metric PS.
Frequently asked questions
How many horsepower (mechanical) are in one watt?
One watt equals 0.0013410221 horsepower (mechanical). Multiply your watts value by 0.0013410221 to convert to horsepower (mechanical).
What is the conversion formula?
hp = W × 0.0013410221The reverse is
W = hp × 745.6998715823, using the same exact factors as this converter.Is this Watt to Horsepower (Mechanical / UK) converter private?
Yes. All calculations run locally in your browser. Nothing you type is sent to a server.
All watt conversions
Jump to any power conversion starting from watt — including the reverse direction and every other unit in our dataset.
horsepower (mechanical / uk) (hp) → watt (W)
watt (W) → kilowatt (kW)watt (W) → megawatt (MW)watt (W) → gigawatt (GW)watt (W) → horsepower (metric) (metric hp)watt (W) → horsepower (electric) (hp (electric))watt (W) → british thermal unit (it) per hour (Btu/h)watt (W) → ton (refrigeration) (TR)watt (W) → exawatt (EW)watt (W) → petawatt (PW)watt (W) → terawatt (TW)watt (W) → hectowatt (hW)watt (W) → dekawatt (daW)watt (W) → deciwatt (dW)watt (W) → centiwatt (cW)watt (W) → milliwatt (mW)watt (W) → microwatt (µW)watt (W) → nanowatt (nW)watt (W) → picowatt (pW)watt (W) → femtowatt (fW)watt (W) → attowatt (aW)watt (W) → horsepower (550 ft·lbf/s) (hp)watt (W) → horsepower (boiler) (hp (boiler))watt (W) → horsepower (water) (hp (water))watt (W) → pferdestärke (ps) (PS)watt (W) → british thermal unit (it) per minute (Btu/min)watt (W) → british thermal unit (it) per second (Btu/s)watt (W) → british thermal unit (thermochemical) per hour (Btu (th)/h)watt (W) → british thermal unit (thermochemical) per minute (Btu (th)/min)watt (W) → british thermal unit (thermochemical) per second (Btu (th)/s)watt (W) → mega british thermal unit (it) per hour (MBtu/h)watt (W) → mbh (thousand btu per hour)watt (W) → kilocalorie (it) per hour (kcal/h)watt (W) → kilocalorie (it) per minute (kcal/min)watt (W) → kilocalorie (it) per second (kcal/s)watt (W) → kilocalorie (thermochemical) per hour (kcal (th)/h)watt (W) → kilocalorie (thermochemical) per minute (kcal (th)/min)watt (W) → kilocalorie (thermochemical) per second (kcal (th)/s)watt (W) → calorie (it) per hour (cal/h)watt (W) → calorie (it) per minute (cal/min)watt (W) → calorie (it) per second (cal/s)watt (W) → calorie (thermochemical) per hour (cal (th)/h)watt (W) → calorie (thermochemical) per minute (cal (th)/min)watt (W) → calorie (thermochemical) per second (cal (th)/s)watt (W) → foot pound-force per hour (ft·lbf/h)watt (W) → foot pound-force per minute (ft·lbf/min)watt (W) → foot pound-force per second (ft·lbf/s)watt (W) → pound-foot per hour (lbf·ft/h)watt (W) → pound-foot per minute (lbf·ft/min)watt (W) → pound-foot per second (lbf·ft/s)watt (W) → erg per second (erg/s)watt (W) → kilovolt ampere (kV·A)watt (W) → volt ampere (V·A)watt (W) → newton meter per second (N·m/s)watt (W) → joule per second (J/s)watt (W) → exajoule per second (EJ/s)watt (W) → petajoule per second (PJ/s)watt (W) → terajoule per second (TJ/s)watt (W) → gigajoule per second (GJ/s)watt (W) → megajoule per second (MJ/s)watt (W) → kilojoule per second (kJ/s)watt (W) → hectojoule per second (hJ/s)watt (W) → dekajoule per second (daJ/s)watt (W) → decijoule per second (dJ/s)watt (W) → centijoule per second (cJ/s)watt (W) → millijoule per second (mJ/s)watt (W) → microjoule per second (µJ/s)watt (W) → nanojoule per second (nJ/s)watt (W) → picojoule per second (pJ/s)watt (W) → femtojoule per second (fJ/s)watt (W) → attojoule per second (aJ/s)watt (W) → joule per hour (J/h)watt (W) → joule per minute (J/min)watt (W) → kilojoule per hour (kJ/h)watt (W) → kilojoule per minute (kJ/min)