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Unit Converters

Thermal Conductivity Converter

Convert thermal conductivity between W/(m·K), BTU/(h·ft·°F) and more.

Thermal conductivity tells you how readily a material conducts heat — high for metals, low for insulation — and it drives every heat-transfer and insulation calculation. Material datasheets quote it in W/(m·K) in SI or BTU/(h·ft·°F) in US practice, with older sources using calorie-based units.

This converter moves any thermal conductivity between W/(m·K), cal/(s·cm·°C), BTU/(h·ft·°F) and kcal/(h·m·°C), so insulation R-values, material specs and heat-loss math stay in one consistent unit.

How to use Thermal Conductivity Converter

  1. 1

    Enter a value

    Type the amount you want to convert.

  2. 2

    Choose the source unit

    Pick the unit you're converting from.

  3. 3

    Choose the target unit

    The converted value appears instantly.

Features

  • Instant bidirectional conversion
  • Standards-based conversion factors
  • Precise results as you type

Frequently asked questions

Common mistakes to avoid

  • Mixing up unit prefixes across several orders of magnitude.
  • Confusing similar-looking units from different measurement systems.
Written by Converter Portal Editorial TeamPublished July 24, 2026Last updated July 24, 2026

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