Convert Kilowatts (kW) to Milliwatts (mW)

1 kilowatt equals 1000000 milliwatts.

Formula: mW = kW × 1000000

Kilowatt to Milliwatt Converter

How to Convert Kilowatt to Milliwatt

1 kilowatt = 1000000 milliwatts

Milliwatt = Kilowatt × 1000000

Example: 1 kW × 1000000 = 1000000 mW

Reverse Conversion

To convert milliwatts back to kilowatts:

Remember, 1 milliwatt equals 1 × 10^-6 kilowatts.
To convert 1000000 mW to kW, multiply 1000000 x 1 × 10^-6, resulting in 1 kW.

Common Kilowatt to Milliwatt Conversions

Kilowatt to Milliwatt (Part 1)

Kilowatt to Milliwatt common conversions part 1
Kilowatt	Milliwatt	Actions
1 kilowatt	1000000 milliwatts
5 kilowatts	5000000 milliwatts
10 kilowatts	10000000 milliwatts
25 kilowatts	2.5 × 10⁷ milliwatts

Kilowatt to Milliwatt (Part 2)

Kilowatt to Milliwatt common conversions part 2
Kilowatt	Milliwatt	Actions
50 kilowatts	5 × 10⁷ milliwatts
100 kilowatts	1 × 10⁸ milliwatts
500 kilowatts	5 × 10⁸ milliwatts
1000 kilowatts	1 × 10⁹ milliwatts

Kilowatts to milliwatts Conversion Table

Reference table with common kilowatts to milliwatts conversions. All values calculated with high precision.

Kilowatts to Milliwatts Table
0.0001 to 12

Kilowatts	Milliwatts	Actions
0.0001 kW	100 mW
0.00025 kW	250 mW
0.0005 kW	500 mW
0.001 kW	1000 mW
0.0025 kW	2500 mW
0.005 kW	5000 mW
0.01 kW	10000 mW
0.025 kW	25000 mW
0.05 kW	50000 mW
0.1 kW	100000 mW
14 kW	250000 mW
12 kW	500000 mW

Kilowatts to Milliwatts Table
1 to 100000

Kilowatts	Milliwatts	Actions
1 kW	1000000 mW
2 12 kW	2500000 mW
5 kW	5000000 mW
10 kW	10000000 mW
25 kW	2.5 × 10⁷ mW
50 kW	5 × 10⁷ mW
100 kW	1 × 10⁸ mW
250 kW	2.5 × 10⁸ mW
500 kW	5 × 10⁸ mW
1000 kW	1 × 10⁹ mW
2500 kW	2.5 × 10⁹ mW
5000 kW	5 × 10⁹ mW
10000 kW	1 × 10¹⁰ mW
25000 kW	2.5 × 10¹⁰ mW
50000 kW	5 × 10¹⁰ mW
100000 kW	1 × 10¹¹ mW

Milliwatts to Kilowatts Table
100 to 500000

Milliwatts	Kilowatts	Actions
100 mW	0.0001 kW
250 mW	0.00025 kW
500 mW	0.0005 kW
1000 mW	0.001 kW
2500 mW	0.0025 kW
5000 mW	0.005 kW
10000 mW	0.01 kW
25000 mW	0.025 kW
50000 mW	0.05 kW
100000 mW	0.1 kW
250000 mW	14 kW
500000 mW	12 kW

Milliwatts to Kilowatts Table
1000000 to 1 × 10¹¹

Milliwatts	Kilowatts	Actions
1000000 mW	1 kW
2500000 mW	2 12 kW
5000000 mW	5 kW
10000000 mW	10 kW
2.5 × 10⁷ mW	25 kW
5 × 10⁷ mW	50 kW
1 × 10⁸ mW	100 kW
2.5 × 10⁸ mW	250 kW
5 × 10⁸ mW	500 kW
1 × 10⁹ mW	1000 kW
2.5 × 10⁹ mW	2500 kW
5 × 10⁹ mW	5000 kW
1 × 10¹⁰ mW	10000 kW
2.5 × 10¹⁰ mW	25000 kW
5 × 10¹⁰ mW	50000 kW
1 × 10¹¹ mW	100000 kW

Definition of Kilowatt

Definition: SI multiple equal to one thousand watts.
Exact factor: 1 kW = 10³ W
Sources: BIPM — SI Brochure

Definition of Milliwatt

Definition: SI multiple equal to one thousandth of a watt.
Exact factor: 1 mW = 10⁻³ W
Sources: BIPM — SI Brochure

About the Kilowatt

Facts & Uses

Standard power rating in electrical systems and appliances.
Used for electric vehicle motors, solar panels, and power plants.
1 kW = 1000 W ≈ 1.341 hp.

Curiosities

Household appliances typically consume hundreds to thousands of watts.
Electricity bills are based on energy in kilowatt-hours (kWh).

Frequently Asked Questions

How many milliwatts are in one kilowatt?

One kilowatt equals 1000000 milliwatts. To convert, multiply the kilowatt value by 1000000. For the reverse, divide the milliwatt value by 1000000 (or multiply by 1 × 10^-6).

What is 231 kilowatts in milliwatts?

231 kilowatts = 2.31 × 10⁸ milliwatts. This is one of the most commonly searched conversions for this pair.

How precise is the kilowatt-to-milliwatt conversion?

The factor 1000000 is accurate to 6 significant figures, derived from international measurement standards. Our calculator uses full precision internally.

Looking for the reverse? Convert Milliwatt to Kilowatt

Related Power Converters

Explore other power conversion tools:

Related in other categories:

Joules to kWh — Energy = power × time (kWh = kW × hours)

Conversion factors verified against NIST, BIPM, ISO 80000-4 Based on SI base units (W = J/s, BIPM). Last reviewed: April 2026

By Adilson Fernandes

Reviewed by Tiago Fernandes

All unit conversions on CoolConversion use conversion factors defined or documented by internationally recognised standards bodies (such as ISO and NIST), including both SI and non-SI units.