DailyCalc

Watts to Horsepower (mechanical) (W to hp)

1 W ≈ 0.00134102 hp. Type any value to convert it.

1 watt =

0.00134102209 hp

horsepower (mechanical)

Conversion factor
1 W ≈ 0.00134102209 hp

Fix the highlighted field to update the result.

Show in all common units
1 W in other units
UnitValue
watt (W)1 W
kilowatt (kW)0.001 kW
megawatt (MW)0.000001 MW
horsepower (mechanical) (hp)0.00134102209 hp
metric horsepower (PS) (PS)0.001359621617 PS
BTU per hour (BTU/h)3.412141633 BTU/h
ton of refrigeration (TR)0.0002843451361 TR

How to convert watts to horsepower (mechanical)

1 W ≈ 0.00134102 hp

1 hp (mechanical) ≈ 745.6999 W (NIST SP 811 B.9), so 1 W ≈ 0.001341022 hp. Electrical horsepower is 746 W exactly.

Examples

  • 1,500 W = 2.0115331 hp: a space heater’s wattage
  • 746 W = 1.0004025 hp: one electrical horsepower (NIST)
  • 750 W = 1.0057666 hp: a blender motor rating

Watts to hp chart

Watts to horsepower (mechanical)
Watts (W)Horsepower (mechanical) (hp)
1 W0.0013410221 hp
2 W0.0026820442 hp
3 W0.0040230663 hp
4 W0.0053640884 hp
5 W0.0067051104 hp
10 W0.013410221 hp
15 W0.020115331 hp
20 W0.026820442 hp
25 W0.033525552 hp
50 W0.067051104 hp
75 W0.10057666 hp
100 W0.13410221 hp
746 W1.0004025 hp
750 W1.0057666 hp
1,500 W2.0115331 hp

Common mistakes

  • Watts measure power, not energy. A 1,500 W device running for 2 hours uses 3 kWh.
  • A motor’s electrical input in watts and its mechanical output in hp are different quantities; this page only converts units.

Frequently asked questions

How many hp is 1,000 watts?

1,000 W is about 1.341 hp. Divide watts by 745.7 to get mechanical horsepower.

Is 746 watts exactly 1 hp?

It is exactly 1 electrical horsepower. In mechanical horsepower, 746 W is about 1.0004 hp, because mechanical hp is about 745.7 W.

What is 1,500 W in hp?

1,500 W is about 2.01 hp. That is the power while running; the energy used depends on how long it runs.