Convert Milliwatts per Metre Kelvin to W/(m·K)
1 milliwatt per metre kelvin (mW/(m·K)) = 0.001 watts per metre kelvin (W/(m·K)). 1 W/(m·K) = 1000 mW/(m·K). Example: 22 mW/(m·K) = 22 × 0.001 = 0.022 W/(m·K).
Also searched as milliwatts per metre kelvin to watt per metre kelvin, milliwatts per metre kelvin in watt per metre kelvin, milliwatts per metre kelvin into watts per metre kelvin, milliwatt per metre kelvin to watt per metre kelvin, milliwatt per metre kelvin in watts per metre kelvin, milliwatt per metre kelvin into watt per metre kelvin, milliwatt per metre kelvin to watts per metre kelvin converter, milliwatts per meter kelvin to watts per meter kelvin and how many watts per metre kelvin in a milliwatt per metre kelvin.
1 mW/(m·K) = 0.001 W/(m·K)
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk milliwatt per metre kelvin to watt per metre kelvin converter to paste a column from Excel.
How to Convert Milliwatt per Metre Kelvin to Watt per Metre Kelvin
- 1 mW/(m·K) = 0.001 W/(m·K)
- 1 W/(m·K) = 1000 mW/(m·K)
- Example: convert 22 mW/(m·K) to W/(m·K): 22 mW/(m·K) = 22 × 0.001 W/(m·K) = 0.022 W/(m·K)
Formula
W/(m·K) = mW/(m·K) ÷ 1000
Derivation from SI units:
- 1 mW/(m·K) = 0.001 W/(m·K)
- The SI unit of thermal conductivity: heat flow (W) per metre of thickness per kelvin of temperature difference
Both units are defined exactly, so the factor is exact. Milliwatt per Metre Kelvin definition: milliwatt per metre kelvin; Watt per Metre Kelvin definition: watt per metre kelvin.
Worked examples
- A PIR board at 22 mW/(m·K) is 0.022 W/(m·K).
22 mW/(m·K) × 0.001 = 0.022 W/(m·K) - Mineral wool at 35 mW/(m·K) is 0.035 W/(m·K).
35 mW/(m·K) × 0.001 = 0.035 W/(m·K)
Milliwatt per Metre Kelvin to Watt per Metre Kelvin conversion table
| Milliwatts per Metre Kelvin (mW/(m·K)) | Watts per Metre Kelvin (W/(m·K)) |
|---|---|
| 10 mW/(m·K) | 0.01 W/(m·K) |
| 15 mW/(m·K) | 0.015 W/(m·K) |
| 18 mW/(m·K) | 0.018 W/(m·K) |
| 22 mW/(m·K) | 0.022 W/(m·K) |
| 24 mW/(m·K) | 0.024 W/(m·K) |
| 26 mW/(m·K) | 0.026 W/(m·K) |
| 30 mW/(m·K) | 0.03 W/(m·K) |
| 32 mW/(m·K) | 0.032 W/(m·K) |
| 35 mW/(m·K) | 0.035 W/(m·K) |
| 40 mW/(m·K) | 0.04 W/(m·K) |
Where it's used
Insulation λ-values quoted in mW/(m·K) are converted to W/(m·K) for U-value and heat loss calculations. Divide by 1000.
Milliwatt per Metre Kelvin to other thermal conductivity units
| Conversion | 1 mW/(m·K) equals |
|---|---|
| milliwatt per metre kelvin to watt per metre kelvin | 0.001 W/(m·K) |
| milliwatt per metre kelvin to BTU per hour foot degree Fahrenheit | 0.0005777893165 BTU/(h·ft·°F) |
| milliwatt per metre kelvin to BTU inch per hour square foot degree Fahrenheit | 0.006933471799 BTU·in/(h·ft²·°F) |
| milliwatt per metre kelvin to kilocalorie per hour metre degree Celsius | 0.0008598452279 kcal/(h·m·°C) |
| milliwatt per metre kelvin to watt per centimetre kelvin | 0.00001 W/(cm·K) |
| milliwatt per metre kelvin to calorie per second centimetre degree Celsius | 0.000002390057361 cal/(s·cm·°C) |
Frequently asked questions
Is 0.035 W/mK the same as 35 mW/mK?
Yes. 1 W/(m·K) = 1000 mW/(m·K).
How many watts per metre kelvin are in 1 milliwatt per metre kelvin?
1 mW/(m·K) = 0.001 W/(m·K).
How do I convert milliwatts per metre kelvin to watts per metre kelvin?
Multiply the value in mW/(m·K) by 0.001, or divide it by 1000. For example, 22 mW/(m·K) × 0.001 = 0.022 W/(m·K).
Is the mW/(m·K) to W/(m·K) conversion exact?
Yes. Both units are defined exactly, and 1 mW/(m·K) is exactly 0.001 W/(m·K).
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4, coherent derived units with special names.
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Milliwatts per Metre Kelvin to W/(m·K). Retrieved October 25, 2026, from https://scientificconverters.com/thermal-conductivity/milliwatts-per-meter-kelvin-to-watts-per-meter-kelvin/
IEEE
Scientific Converters, "Convert Milliwatts per Metre Kelvin to W/(m·K)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/thermal-conductivity/milliwatts-per-meter-kelvin-to-watts-per-meter-kelvin/