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Watts to HP Converter (Watts to Horsepower)

1 watt = 0.00134102209 horsepower. To convert W to hp, multiply by 0.00134102209, or divide by 745.6998716.

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100 W = 0.1341 hp

1 W
0.001341 hp
1 hp
745.6999 W
10 W
0.01341 hp
100 W
0.1341 hp

How to convert Watts to HP

1 watt equals 0.00134102209 horsepower, so the conversion is a single multiplication.

hp = W × 0.00134102209

Example: 150 W × 0.00134102209 = 0.2012 hp.

About the horsepower

Horsepower (hp)

Mechanical horsepower is about 745.7 watts. James Watt introduced the unit to compare steam engines with horses.

1 watt in every power unit

Horsepower0.001341 hp
Kilowatts0.001 kW
Metric Horsepower0.00136 PS
Btu per Hour3.412 Btu/h
Megawatts0.000001 MW
Gigawatts1e-9 GW
Milliwatts1,000 mW
Tons of Refrigeration0.0002843 TR
Kilocalories per Hour0.8598 kcal/h
Foot-Pounds per Second0.7376 ft·lbf/s
HP to WattsReverse conversionHP to kW1 hp = 0.7457 kWkW to HP1 kW = 1.341 hpBTU/h to Watts1 Btu/h = 0.2931 WWatts to BTU/h1 W = 3.4121 Btu/h

Watts to HP FAQ

How many horsepower are in a watt?

1 watt = 0.00134102209 horsepower.

How many watts are in a horsepower?

1 horsepower = 745.6998716 watts.

How do I convert W to hp?

Use hp = W × 0.00134102209. For example, 10 W = 0.01341 hp.

Can I print this Watts to HP chart?

Yes. Use "Print / Save PDF" next to the converter for a one-page chart, or "Download CSV" to open it in Excel or Google Sheets.