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Thermal Resistance Converter

Convert thermal resistance: K/W, °F·h/BTU.

3 units
6 decimals

1 K/W = 0.527528 °F·h/BTU

About the thermal resistance converter

Convert thermal resistance between K/W (SI), °C/W, and °F·h/BTU. Thermal resistance describes how strongly a material or assembly resists heat flow — the inverse of conductance. Higher values mean better insulation.

Frequently asked questions

  • How many K/W is 1 °F·h/BTU?

    One °F·h/BTU equals approximately 1.8956 K/W.

  • Is K/W the same as °C/W?

    Yes. Since the values describe a temperature difference, K and °C intervals are equivalent.

  • How is thermal resistance related to R-value?

    Construction R-value is per unit area: R = thermal resistance × area. Building R-values are usually quoted in (m²·K)/W (RSI) or (ft²·°F·h)/BTU (R-value).

Complete list of thermal resistance units