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Horsepower to Watts converter

Convert hp to W instantly. Type any value and get the result in watts. 1 hp = 745.7 W.

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Power›hp → W
From
To
result below ↓
1 hp=
745.7W
formula1 hp = 745.7 W

Common horsepower → watts

=745.7 W
=1,491.4 W
=3,728.5 W
=7,457 W
=14,914 W
=37,285 W
=74,570 W
=372,850 W
=745,700 W

Need a different value? .

Convert the other way
Watts to Horsepower

How to convert horsepower to watts

To convert horsepower to watts, multiply the value by 745.7.

Formula
W = hp × 745.7

For example:

  • →5 hp = 3,728.5 W
  • →100 hp = 74,570 W

Quick reference

  • ▸1 hp = 745.7 W
  • ▸1 W = 0.00134102 hp

When you need to convert hp to W

  • ·Appliances — wattage to know what your circuit can handle.
  • ·Vehicles — comparing horsepower to kilowatts.
  • ·HVAC — sizing air conditioners with BTU/h.
  • ·Audio gear — speaker and amp ratings.
  • ·Renewable energy — solar panel output.

Frequently asked

How many watts are in 1 horsepower?
One horsepower equals 745.7 watts.
How do I convert hp to W in my head?
Multiply the value in horsepower by 745.7 to get watts.
What is the formula for horsepower to watts?
W = hp × 745.7.
What is the reverse — how many horsepower in 1 watt?
One watt equals 0.00134102 horsepower.

Related conversions

Watts to Horsepower
1 W = 0.00134102 hp
Horsepower to Kilowatts
1 hp = 0.7457 kW
Horsepower to Megawatts
1 hp = 0.0007457 MW
Horsepower to Metric Horsepower
1 hp = 1.01387 PS
Kilowatts to Watts
1 kW = 1,000 W
Megawatts to Watts
1 MW = 1,000,000 W
Metric Horsepower to Watts
1 PS = 735.499 W
BTU per Hour to Watts
1 BTU/h = 0.293071 W
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