Thermal Conductivity Converter

Convert thermal conductivity values between W/m·K and other units, describing how readily a material transmits heat.

Thermal Conductivity Is the Direct Opposite of Thermal Resistance

Thermal conductivity measures how readily a material allows heat to pass through it, making it essentially the inverse concept to thermal resistance covered separately, since a material with high thermal conductivity, like most metals, transmits heat quickly and therefore makes a poor insulator, while a material with low thermal conductivity, like most foams and fibrous insulation materials, resists heat flow effectively and makes a good insulator. The standard unit, watts per metre-kelvin, directly reflects what’s being measured, the rate of heat energy transmission in watts, through a specific thickness in metres, driven by a specific temperature difference in kelvin, meaning the unit itself essentially encodes the underlying physical relationship rather than being an arbitrary label. This is exactly why metals, with thermal conductivity values often hundreds of times higher than common insulation materials, feel so much colder to the touch than a wooden or fabric surface at the exact same ambient temperature, since the metal conducts heat away from your hand far more efficiently, an experience most people have felt directly without necessarily connecting it to the underlying thermal conductivity value now being converted.