Watt/Meter-Kelvin to Milliwatt/Meter-Kelvin Converter

Thermal Conductivity Converter

7 units available

Decimals:

From

To

1,000

1 W/(m·K) = 1,000 mW/(m·K)

Formula:

mW/(m·K) = W/(m·K) × 1,000

With your value: 1 W/(m·K) = 1,000 mW/(m·K)

Other Watt/Meter-Kelvin to Milliwatt/Meter-Kelvin conversions

2 W/(m·K) to mW/(m·K)3 W/(m·K) to mW/(m·K)4 W/(m·K) to mW/(m·K)5 W/(m·K) to mW/(m·K)6 W/(m·K) to mW/(m·K)7 W/(m·K) to mW/(m·K)8 W/(m·K) to mW/(m·K)

Watt/Meter-Kelvin to Milliwatt/Meter-Kelvin Conversion Table

Watt/Meter-Kelvin (W/(m·K))	Milliwatt/Meter-Kelvin (mW/(m·K))
0.5	500
1	1,000
2	2,000
5	5,000
10	10,000
15	15,000
20	20,000
25	25,000
50	50,000
100	100,000
250	250,000
500	500,000
1000	1,000,000

Milliwatt/Meter-Kelvin to Watt/Meter-Kelvin Conversion Table

Milliwatt/Meter-Kelvin (mW/(m·K))	Watt/Meter-Kelvin (W/(m·K))
0.5	0.0005
1	0.001
2	0.002
5	0.005
10	0.01
15	0.015
20	0.02
25	0.025
50	0.05
100	0.1
250	0.25
500	0.5
1000	1

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.

Watt/Meter-Kelvin (W/(m·K))

Thermal Conductivity

Exact conversion

Derived quantity, watt per metre-kelvin (W/(m·K)). Imperial and calorie-based units convert exactly via the thermochemical calorie and the international BTU.

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/Meter-Kelvin (mW/(m·K))

Thermal Conductivity

Exact conversion

Derived quantity, watt per metre-kelvin (W/(m·K)). Imperial and calorie-based units convert exactly via the thermochemical calorie and the international BTU.

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 Watt/Meter-Kelvin to Milliwatt/Meter-Kelvin

To convert from Watt/Meter-Kelvin (W/(m·K)) to Milliwatt/Meter-Kelvin (mW/(m·K)), multiply the value by 1,000.

Formula: mW/(m·K) = W/(m·K) × 1,000

Reverse: W/(m·K) = mW/(m·K) × 0.001

Step-by-Step Example

Start with your value in Watt/Meter-Kelvin. For example: 5 W/(m·K)
Multiply by the conversion factor: 5 x 1,000
The result is: 5,000 mW/(m·K)

About Watt/Meter-Kelvin

The watt/meter-kelvin (W/(m·K)) is a unit of thermal conductivity. One watt/meter-kelvin equals 1 base unit. UnitConvertLab converts it against every other thermal conductivity unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: thermal conductivity calculations, engineering and science, education.

About Milliwatt/Meter-Kelvin

The milliwatt/meter-kelvin (mW/(m·K)) is a unit of thermal conductivity. One milliwatt/meter-kelvin equals 0.001 base units. UnitConvertLab converts it against every other thermal conductivity unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: thermal conductivity calculations, engineering and science, education.

Frequently Asked Questions

How many Milliwatt/Meter-Kelvin are in 1 Watt/Meter-Kelvin?

There are exactly 1,000 Milliwatt/Meter-Kelvin in 1 Watt/Meter-Kelvin. This means the conversion factor from Watt/Meter-Kelvin to Milliwatt/Meter-Kelvin is 1,000.

What is the formula to convert Watt/Meter-Kelvin to Milliwatt/Meter-Kelvin?

The formula to convert Watt/Meter-Kelvin to Milliwatt/Meter-Kelvin is: mW/(m·K) = W/(m·K) × 1,000. For example, to convert 10 Watt/Meter-Kelvin to Milliwatt/Meter-Kelvin, you would multiply 10 by 1,000.

What is a Watt/Meter-Kelvin?