Horsepower (Elec) to Milliwatt Converter

Power Converter

22 units available

Decimals:

From

To

746,000

1 hp (E) = 746,000 mW

Formula:

mW = hp (E) × 746,000

With your value: 1 hp (E) = 746,000 mW

How big is that?

Everyday references on a logarithmic scale, all expressed in horsepower (elec) so you can sanity-check the result.

LED bulb (1/83 your value)0.0121 hp (E)

Laptop (1/11 your value)0.0871 hp (E)

Your value1.00 hp (E)

Microwave oven (1.3× your value)1.34 hp (E)

Electric kettle (4.0× your value)4.02 hp (E)

Family car engine (1.2e+2× your value)121 hp (E)

Other Horsepower (Elec) to Milliwatt conversions

2 hp (E) to mW 3 hp (E) to mW 4 hp (E) to mW 5 hp (E) to mW 6 hp (E) to mW 7 hp (E) to mW 8 hp (E) to mW

Horsepower (Elec) to Milliwatt Conversion Table

Horsepower (Elec) (hp (E))	Milliwatt (mW)
0.5	373,000
1	746,000
2	1,492,000
5	3,730,000
10	7,460,000
15	11,190,000
20	14,920,000
25	18,650,000
50	37,300,000
100	74,600,000
250	186,500,000
500	373,000,000
1000	746,000,000

Milliwatt to Horsepower (Elec) Conversion Table

Milliwatt (mW)	Horsepower (Elec) (hp (E))
0.5	6.702413e-7
1	1.340483e-6
2	2.680965e-6
5	6.702413e-6
10	1.340483e-5
15	2.010724e-5
20	2.680965e-5
25	3.351206e-5
50	6.702413e-5
100	0.000134
250	0.000335
500	0.00067
1000	0.00134

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Horsepower (Elec) (hp (E))

Power

Exact conversion

Derived from the watt (1 W = 1 J/s).

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

Milliwatt (mW)

Power

Exact conversion

Derived from the watt (1 W = 1 J/s).

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

How to Convert Horsepower (Elec) to Milliwatt

To convert from Horsepower (Elec) (hp (E)) to Milliwatt (mW), multiply the value by 746,000.

Formula: mW = hp (E) × 746,000

Reverse: hp (E) = mW × 0.0000013405

Step-by-Step Example

Start with your value in Horsepower (Elec). For example: 5 hp (E)
Multiply by the conversion factor: 5 x 746,000
The result is: 3,730,000 mW

About Horsepower (Elec)

The horsepower (elec) (hp (E)) is a unit of power. One horsepower (elec) equals 746 watts. UnitConvertLab converts it against every other power unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: power calculations, engineering and science, education.

About Milliwatt

The milliwatt (mW) is a unit of power. One milliwatt equals 0.001 watts. UnitConvertLab converts it against every other power unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: power calculations, engineering and science, education.

Frequently Asked Questions

How many Milliwatt are in 1 Horsepower (Elec)?

There are exactly 746,000 Milliwatt in 1 Horsepower (Elec). This means the conversion factor from Horsepower (Elec) to Milliwatt is 746,000.

What is the formula to convert Horsepower (Elec) to Milliwatt?

The formula to convert Horsepower (Elec) to Milliwatt is: mW = hp (E) × 746,000. For example, to convert 10 Horsepower (Elec) to Milliwatt, you would multiply 10 by 746,000.

What is a Horsepower (Elec)?