Thermal Conductivity

Convert w/mk to btu·in/hr·ft²·°f

1 watt per meter kelvin equals 6.9334718 btu (it) inch per hour ft² °f. Enter a value below to convert instantly.

1 W/(m·K)
6.9334718 BTU·in/(h·ft²·°F)

Multiply the number of watts per meter kelvin by 6.9334717968 to get btu (it) inch per hour ft² °f. How this is calculated

Need the other direction? Convert btu (it) inch per hour ft² °f to watt per meter kelvin →

Formula

Multiply the number of watts per meter kelvin by 6.9334717968 to get btu (it) inch per hour ft² °f.

Step by step

  1. Start with 1 W/(m·K).
  2. Multiply by the conversion factor 6.9334717968.
  3. 1 × 6.9334717968 = 6.9334718 BTU·in/(h·ft²·°F).

Watts per Meter Kelvin to BTU (IT) inch per Hour ft² °F conversion table

Conversion table from Watts per Meter Kelvin to BTU (IT) inch per Hour ft² °F
Watts per Meter Kelvin (W/(m·K)) BTU (IT) inch per Hour ft² °F (BTU·in/(h·ft²·°F))
0.1 0.69334718
0.5 3.4667359
1 6.9334718
2 13.866944
5 34.667359
10 69.334718
50 346.67359
100 693.34718

Convert Watt per Meter Kelvin to other thermal conductivity units

1 W/(m·K) expressed in every other thermal conductivity unit on this site.

  • Watt per Centimeter °C W/(cm·°C) 0.01
  • Kilowatt per Meter Kelvin kW/(m·K) 0.001
  • Milliwatt per Meter Kelvin mW/(m·K) 1,000
  • Calorie (IT) per Second cm °C cal(IT)/(s·cm·°C) 0.002388459
  • Kilocalorie (IT) per Hour m °C kcal(IT)/(h·m·°C) 0.85984523
  • BTU (IT) per Hour ft °F BTU/(h·ft·°F) 0.57778932
  • BTU (th) per Hour ft °F BTU(th)/(h·ft·°F) 0.57817598
  • BTU (IT) per Second ft °F BTU/(s·ft·°F) 0.00016049703
  • BTU (IT) inch per Hour ft² °F BTU·in/(h·ft²·°F) 6.9334718
  • BTU (IT) inch per Second ft² °F BTU·in/(s·ft²·°F) 0.0019259644
  • Calorie (th) per Second cm °C cal(th)/(s·cm·°C) 0.0023900574
  • Kilocalorie (th) per Hour m °C kcal(th)/(h·m·°C) 0.86042065
  • BTU (th) inch per Hour ft² °F BTU(th)·in/(h·ft²·°F) 6.9381118
  • BTU (th) inch per Second ft² °F BTU(th)·in/(s·ft²·°F) 0.0019272533

About the watt per meter kelvin

The watt per meter kelvin (W/(m·K)) is a SI unit of thermal conductivity.

About the btu (it) inch per hour ft² °f

The btu (it) inch per hour ft² °f (BTU·in/(h·ft²·°F)) is a Imperial unit of thermal conductivity. The basis of US insulation R-values: R per inch = 1 ÷ this value.

Where this conversion is used

Converting watts per meter kelvin to btu (it) inch per hour ft² °f comes up when insulation selection, heat-sink design, and building energy modelling. US insulation is sold by R-value, which is the reciprocal of conductivity per unit thickness — a higher R means a lower conductivity.

Related conversions

Frequently asked questions

How many btu (it) inch per hour ft² °f are in a watt per meter kelvin?

One watt per meter kelvin equals 6.9334718 btu (it) inch per hour ft² °f.

How do you convert watts per meter kelvin to btu (it) inch per hour ft² °f?

Multiply the number of watts per meter kelvin by 6.9334717968 to get btu (it) inch per hour ft² °f.

What is 1 btu (it) inch per hour ft² °f in watts per meter kelvin?

One btu (it) inch per hour ft² °f equals 0.14422789 watts per meter kelvin.

When would I convert watts per meter kelvin to btu (it) inch per hour ft² °f?

This conversion is common when insulation selection, heat-sink design, and building energy modelling.

Conversion factors are based on internationally agreed unit definitions. See our methodology and sources for details on how these values are verified.