Thermal Conductivity Converter

Convert between thermal conductivity units including W/mK, BTU/hr-ft-F, and more.

Value

From

1 W/mK =

0.577789

BTU per hour-foot-F

1 W/mK in all units

Watt per meter-Kelvin (W/mK)1

Watt per cm-Kelvin (W/cmK)0.01

Kilowatt per meter-Kelvin (kW/mK)0.001

BTU per hour-foot-F0.577789

BTU-inch per hour-sq foot-F6.933471

Calorie per second-cm-C0.00239

Kilocalorie per hour-meter-C0.859845

Copper

~400 W/mK

Aluminum

~235 W/mK

Water

~0.6 W/mK

Air

~0.026 W/mK

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MyCalcBuddy Editorial Team

This page is maintained as an educational calculator reference.

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Formula Source: NIST Guide to SI Units

by National Institute of Standards

ðŸ”„Last reviewed: May 2026

âœ“Formula checks are based on standard references and internal QA review.