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Thermal resistance converter

How much a path resists heat — heatsinks and insulation. 5 units, converted from one table of exact factors.

1 kelvin/watt in every other thermal resistance unit

Computed by the same engine that runs the converter above, so these can never drift apart from it.

FromEqualsUnit
1 kelvin/watt1degree Celsius/watt (°C/W)
1 kelvin/watt0.5275279263degree Fahrenheit·hour/BTU (°F·h/Btu)
1 kelvin/watt1,000kelvin/kilowatt (K/kW)
1 kelvin/watt1,899.100776degree Fahrenheit·second/BTU (°F·s/Btu)

What each unit actually is

Most converters give you a number and stop. Where a figure is exact by definition we say so, and where it is an average or shifts with conditions we say that too — that is usually the thing you needed to know.

UnitSymbolWhat it actually is
kelvin/wattK/WSI.
degree Celsius/watt°C/WIdentical to K/W. Heatsinks are rated in this.
degree Fahrenheit·hour/BTU°F·h/BtuThe US construction R-value family.
kelvin/kilowattK/kW
degree Fahrenheit·second/BTU°F·s/Btu

Every converter on the site