BTU inch per hour square foot °F to Watts per metre kelvin
Convert BTU inch per hour square foot °F to watts per metre kelvin instantly.
BTU inch per hour square foot °F to Watts per metre kelvin (BTU·in/(h·ft²·°F) to W/(m·K)) Converter
1 BTU inch per hour square foot °F = 0.14423 watts per metre kelvin
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- 1 BTU·in/(h·ft²·°F) = 0.14423 W/(m·K)
- 5 BTU·in/(h·ft²·°F) = 0.72114 W/(m·K)
- 10 BTU·in/(h·ft²·°F) = 1.4423 W/(m·K)
- 25 BTU·in/(h·ft²·°F) = 3.6057 W/(m·K)
- Watts per metre kelvinW/(m·K)
- BTU per hour foot °FBTU/(h·ft·°F)
- BTU inch per hour square foot °FBTU·in/(h·ft²·°F)
- Watts per metre kelvinW/(m·K)
- BTU per hour foot °FBTU/(h·ft·°F)
How it’s calculated
W/(m·K) = BTU·in/(h·ft²·°F) × 0.1442278889
- Multiply the value in BTU inch per hour square foot °F by 0.1442278889.
- To go back, divide by 0.1442278889 (or multiply by 6.933471799).
- 1 BTU·in/(h·ft²·°F) = 0.1442278889 W/(m·K) · 1 W/(m·K) = 6.933471799 BTU·in/(h·ft²·°F)
Quick examples
1 BTU inch per hour square foot °F = 0.14423 watts per metre kelvin · 1 W/(m·K) = 6.9335 BTU·in/(h·ft²·°F)
- 1 BTU inch per hour square foot °F = 0.14423 watts per metre kelvin
- 5 BTU inch per hour square foot °F = 0.72114 watts per metre kelvin
- 10 BTU inch per hour square foot °F = 1.4423 watts per metre kelvin
- 25 BTU inch per hour square foot °F = 3.6057 watts per metre kelvin
- 100 BTU inch per hour square foot °F = 14.423 watts per metre kelvin
BTU inch per hour square foot °F to watts per metre kelvin conversion table
| BTU inch per hour square foot °F (BTU·in/(h·ft²·°F)) | Watts per metre kelvin (W/(m·K)) |
|---|---|
| 0.025 BTU·in/(h·ft²·°F) | 0.0036057 W/(m·K) |
| 0.04 BTU·in/(h·ft²·°F) | 0.0057691 W/(m·K) |
| 0.1 BTU·in/(h·ft²·°F) | 0.014423 W/(m·K) |
| 0.5 BTU·in/(h·ft²·°F) | 0.072114 W/(m·K) |
| 1 BTU·in/(h·ft²·°F) | 0.14423 W/(m·K) |
| 1.5 BTU·in/(h·ft²·°F) | 0.21634 W/(m·K) |
| 15 BTU·in/(h·ft²·°F) | 2.1634 W/(m·K) |
| 50 BTU·in/(h·ft²·°F) | 7.2114 W/(m·K) |
| 100 BTU·in/(h·ft²·°F) | 14.423 W/(m·K) |
| 200 BTU·in/(h·ft²·°F) | 28.846 W/(m·K) |
| 237 BTU·in/(h·ft²·°F) | 34.182 W/(m·K) |
| 400 BTU·in/(h·ft²·°F) | 57.691 W/(m·K) |
About these units
BTU inch per hour square foot °F (BTU·in/(h·ft²·°F))
US & imperial (identical)
1 BTU·in/(h·ft²·°F) ≈ 0.14422789 W/(m·K)
The US insulation k-value unit, about 0.14423 W/(m·K).
Source: NIST SP 811 / Handbook 44
Watt per metre kelvin (W/(m·K))
SI (metric)
Base unit
The SI unit of thermal conductivity. Copper is about 400, steel is about 50, mineral wool is about 0.04 W/(m·K).
Source: BIPM SI Brochure (9th ed.)
Frequently asked questions
How do I convert BTU inch per hour square foot °F to watts per metre kelvin?
Use W/(m·K) = BTU·in/(h·ft²·°F) × 0.1442278889. Multiply the value in BTU inch per hour square foot °F by 0.1442278889.
How many watts per metre kelvin are in 1 BTU inch per hour square foot °F?
1 BTU inch per hour square foot °F (BTU·in/(h·ft²·°F)) equals 0.14423 watts per metre kelvin (W/(m·K)); more precisely 0.1442278889.
How many BTU inch per hour square foot °F are in 1 watt per metre kelvin?
1 watt per metre kelvin (W/(m·K)) equals 6.9335 BTU inch per hour square foot °F (BTU·in/(h·ft²·°F)); more precisely 6.933471799.
What is 15 BTU·in/(h·ft²·°F) in W/(m·K)?
15 BTU inch per hour square foot °F = 2.1634 watts per metre kelvin.
What is a BTU inch per hour square foot °F?
The US insulation k-value unit, about 0.14423 W/(m·K).
What is a watt per metre kelvin?
The SI unit of thermal conductivity. Copper is about 400, steel is about 50, mineral wool is about 0.04 W/(m·K).
Related conversions
Formula: W/(m·K) = BTU·in/(h·ft²·°F) × 0.1442278889. Factors last reviewed 2026-10-27.