Power conversion

Convert Milliwatt to Mechanical horsepower

1 milliwatt (mW) equals 0.000001341022 mechanical horsepower (hp(I)). Enter any value below to convert from mW to hp(I).

Enter a value and choose units. Results update instantly.

1 mW = 0.000001341 hp(I)

All Power units

From 1 mW
UnitValue
Watt W 0.001
Kilowatt kW 0.000001
Megawatt MW 0.000000001
Milliwatt mW 1
Mechanical horsepower hp(I) 0.000001341
Metric horsepower PS 0.0000013596
BTU (IT) per hour BTU/h 0.0034121416
Foot-pound per second ft·lb/s 0.0007375621
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Formula

mW to hp(I) conversion formula

Use this relationship for a direct conversion:

hp(I) = mW x 0.000001341022

Worked example

2 mW = 0.000002682 hp(I).

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

Quick reference

Milliwatt to Mechanical horsepower table

Milliwatt (mW)Mechanical horsepower (hp(I))
0.010.0000000134
0.10.0000001341
10.000001341
20.000002682
50.0000067051
100.0000134102
250.0000335256
500.0000670511
1000.0001341022
1,0000.0013410221

From unit

About the milliwatt

One thousandth of a watt.

Symbol: mW

To unit

About the mechanical horsepower

Exactly 550 foot-pounds force per second.

Symbol: hp(I)

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Related conversions

Source

Conversion standard

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

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Questions

mW to hp(I) FAQ

How do you convert milliwatt to mechanical horsepower?

Use the formula hp(I) = mW x 0.000001341022. 1 milliwatt (mW) equals 0.000001341022 mechanical horsepower (hp(I)).

Is the mW to hp(I) conversion exact?

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