Power conversion

Convert Mechanical horsepower to Watt

1 mechanical horsepower (hp(I)) equals 745.69987158227 watt (W). Enter any value below to convert from hp(I) to W.

Enter a value and choose units. Results update instantly.

1 hp(I) = 745.6998715823 W

All Power units

From 1 hp(I)
UnitValue
Watt W 745.6998715823
Kilowatt kW 0.7456998716
Megawatt MW 0.0007456999
Milliwatt mW 745,699.8715822703
Mechanical horsepower hp(I) 1
Metric horsepower PS 1.0138696654
BTU (IT) per hour BTU/h 2,544.433577644
Foot-pound per second ft·lb/s 550
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Formula

hp(I) to W conversion formula

Use this relationship for a direct conversion:

W = hp(I) x 745.69987158227

Worked example

2 hp(I) = 1,491.3997431645 W.

Horsepower type is always identified because mechanical and metric horsepower differ by about 1.4 percent.

Quick reference

Mechanical horsepower to Watt table

Mechanical horsepower (hp(I))Watt (W)
0.017.4569987158
0.174.5699871582
1745.6998715823
21,491.3997431645
53,728.4993579114
107,456.9987158227
2518,642.4967895568
5037,284.9935791135
10074,569.987158227
1,000745,699.8715822703

From unit

About the mechanical horsepower

Exactly 550 foot-pounds force per second.

Symbol: hp(I)

To unit

About the watt

One joule per second.

Symbol: W

Keep converting

Related conversions

Watt to Mechanical horsepowerReverse this conversion Mechanical horsepower to Kilowatthp(I) to kWMechanical horsepower to Megawatthp(I) to MWMechanical horsepower to Milliwatthp(I) to mWMechanical horsepower to Metric horsepowerhp(I) to PSMechanical horsepower to BTU (IT) per hourhp(I) to BTU/hMechanical horsepower to Foot-pound per secondhp(I) to ft·lb/s

Source

Conversion standard

Definitions are checked against NIST SP 811: Power units. Calculations use full internal precision before display rounding.

View the complete power converter

Questions

hp(I) to W FAQ

How do you convert mechanical horsepower to watt?

Use the formula W = hp(I) x 745.69987158227. 1 mechanical horsepower (hp(I)) equals 745.69987158227 watt (W).

Is the hp(I) to W conversion exact?

Horsepower type is always identified because mechanical and metric horsepower differ by about 1.4 percent.