Milliwatt per Metre Kelvin (mW/(m·K))
The milliwatt per metre kelvin is 0.001 W/(m·K). Insulation manufacturers use it for low conductivities: PIR boards about 22, mineral wool 32–40, still air about 26 mW/(m·K).
Symbol: mW/(m·K) (ASCII: mW/(m*K))
Quantity: thermal conductivity (k, λ)
SI relation: 1 mW/(m·K) = 0.001 W/(m·K) (exact)
Derivation: 1 mW/(m·K) = 0.001 W/(m·K)
Exact: yes, by definition
Typical uses
- Insulation product data (λ-values)
- Aerogels, foams and vacuum panels
- Gas thermal conductivity
Convert milliwatts per metre kelvin to other units
Open the Thermal Conductivity Converter to convert any value between all units.
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). Milliwatt per Metre Kelvin (mW/(m·K)). Retrieved October 25, 2026, from https://scientificconverters.com/units/milliwatt-per-meter-kelvin/
IEEE
Scientific Converters, "Milliwatt per Metre Kelvin (mW/(m·K))," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/units/milliwatt-per-meter-kelvin/