Thermal Conductivity Converter
Convert between thermal conductivity units including W/mK, BTU/hr-ft-F, and more.
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
Quick Reference
Copper
~400 W/mK
Aluminum
~235 W/mK
Water
~0.6 W/mK
Air
~0.026 W/mK
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Editorial Note
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
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.