Btus/hour/foot/°F to Kilowatts/meter/kelvin Converter (Btu/(h·ft·°F) to kW/(m·K))
Btu/(h·ft·°F) × 0.0017307356 = kW/(m·K)
Calculation: 1 Btu/(h·ft·°F) × 0.0017307356 = 0.0017307356 kW/(m·K)
Common Btu/hour/foot/°F to Kilowatt/meter/kelvin Calculations
Quick-lookup reference table showing calculated equivalents for standard increments between Btu/hour/foot/°F (Btu/(h·ft·°F)) and Kilowatt/meter/kelvin (kW/(m·K)).
| Conversion & Equivalent Value | Scientific Notation |
|---|---|
| 0.001 Btu/(h·ft·°F) 1.730736 × 10⁻⁶ kW/(m·K) | 1.731 × 10⁻⁶ |
| 0.01 Btu/(h·ft·°F) 1.730736 × 10⁻⁵ kW/(m·K) | 1.731 × 10⁻⁵ |
| 0.1 Btu/(h·ft·°F) 0.000173074 kW/(m·K) | 1.731 × 10⁻⁴ |
| 0.5 Btu/(h·ft·°F) 0.000865368 kW/(m·K) | 8.654 × 10⁻⁴ |
| 1 Btu/(h·ft·°F) 0.00173074 kW/(m·K) | 1.731 × 10⁻³ |
| 2 Btu/(h·ft·°F) 0.00346147 kW/(m·K) | 3.461 × 10⁻³ |
| 5 Btu/(h·ft·°F) 0.00865368 kW/(m·K) | 8.654 × 10⁻³ |
| 10 Btu/(h·ft·°F) 0.0173074 kW/(m·K) | 1.731 × 10⁻² |
| 20 Btu/(h·ft·°F) 0.0346147 kW/(m·K) | 3.461 × 10⁻² |
| 25 Btu/(h·ft·°F) 0.0432684 kW/(m·K) | 4.327 × 10⁻² |
| 50 Btu/(h·ft·°F) 0.0865368 kW/(m·K) | 8.654 × 10⁻² |
| 100 Btu/(h·ft·°F) 0.173074 kW/(m·K) | 1.731 × 10⁻¹ |
| 250 Btu/(h·ft·°F) 0.432684 kW/(m·K) | 4.327 × 10⁻¹ |
| 500 Btu/(h·ft·°F) 0.865368 kW/(m·K) | 8.654 × 10⁻¹ |
| 1000 Btu/(h·ft·°F) 1.730736 kW/(m·K) | 1.731 × 10⁰ |
| Reciprocal & Equivalent Value | Scientific Notation |
|---|---|
| 1 kW/(m·K) 577.789 Btu/(h·ft·°F) | 5.778 × 10² |
| 5 kW/(m·K) 2888.945 Btu/(h·ft·°F) | 2.889 × 10³ |
| 10 kW/(m·K) 5777.89 Btu/(h·ft·°F) | 5.778 × 10³ |
| 50 kW/(m·K) 28889.45 Btu/(h·ft·°F) | 2.889 × 10⁴ |
| 100 kW/(m·K) 57778.9 Btu/(h·ft·°F) | 5.778 × 10⁴ |
Real-World Context & Everyday Benchmarks
Tap to load into converterTo help contextualize these units in everyday life, science, and engineering, here are verified real-world reference points for Btu/hour/foot/°F (Btu/(h·ft·°F)) and Kilowatt/meter/kelvin (kW/(m·K)):
Btu/hour/foot/°F References:
- Stationary atmospheric dry air thermal conductivity at sea level 0.015023 Btu/(h·ft·°F)
- Commercial fiberglass building insulation batt thermal conductivity 0.023112 Btu/(h·ft·°F)
- Liquid drinking water thermal conductivity at room temperature 0.346673 Btu/(h·ft·°F)
- Architectural structural concrete wall thermal conductivity 0.866684 Btu/(h·ft·°F)
Kilowatt/meter/kelvin References:
- Industrial high-temperature heat pipe ultra-conductive core 20 kW/(m·K)
- Graphene monocrystal in-plane acoustic phonon conductivity 4 kW/(m·K)
How to Convert Btu/hour/foot/°F to Kilowatt/meter/kelvin
Converting Btu/hour/foot/°F (Btu/(h·ft·°F)) to Kilowatt/meter/kelvin (kW/(m·K)) is a core calculation in Thermal Conductivity, which measures a material's intrinsic capacity to conduct and transfer heat through microscopic collisions. This calculation navigates the boundary between the International Metric System (SI) and British Imperial / US Customary engineering standards. In contemporary metrology, Imperial units are defined in terms of exact SI standards via international agreements—notably NIST SP 811 and the 1959 International Yard and Pound Agreement. Exactly 1 Btu/hour/foot/°F equals 0.00173074 Kilowatt/meter/kelvin, while 1 kW/(m·K) equals 577.789 Btu/(h·ft·°F).
Mathematical Conversion Derivation via Coherent SI Base Unit
Under the International System of Quantities (ISQ), dimensional conversion between non-SI units is rigorously resolved by bridging through the coherent SI base unit (watt per meter kelvin (W/(m·K))) without arbitrary rounding:
1 Btu/(h·ft·°F) = 1.730736 watt per meter kelvin (W/(m·K))1 kW/(m·K) = 1000 watt per meter kelvin (W/(m·K))V(kW/(m·K)) = V(Btu/(h·ft·°F)) × ( 1.730736 / 1000 ) = V(Btu/(h·ft·°F)) × 0.00173074Value in Kilowatt/meter/kelvin = Value in Btu/hour/foot/°F × 0.0017307356Direct computational formula applied for standard conversion.For an engineering input of 8 Btu/(h·ft·°F), applying the conversion factor yields exactly 0.0138459 kW/(m·K). At larger operational scale, 240 Btu/hour/foot/°F corresponds to 0.415377 kW/(m·K).
Inverse check: 1 kW/(m·K) = 577.789 Btu/(h·ft·°F).Understanding Btu/hour/foot/°F and Kilowatt/meter/kelvin
Btu/hour/foot/°F
Btu/(h·ft·°F)A Btu/hour/foot/°F (Btu/(h·ft·°F)) is an imperial and US customary unit for thermal conductivity.
Applications & Practical Context
In practical thermal conductivity terms, a stationary atmospheric dry air thermal conductivity at sea level equals 0.015023 Btu/(h·ft·°F), a commercial fiberglass building insulation batt thermal conductivity equals 0.023112 Btu/(h·ft·°F), a liquid drinking water thermal conductivity at room temperature equals 0.346673 Btu/(h·ft·°F).
A physical magnitude of 1 Btu/(h·ft·°F) corresponds to 1.730736 W/(m·K) in standard SI measurement.
1 Btu/(h·ft·°F) = 1.730736 W/(m·K)Kilowatt/meter/kelvin
kW/(m·K)A Kilowatt/meter/kelvin (kW/(m·K)) is a decimal multiple of the SI-derived unit for thermal conductivity.
Applications & Practical Context
In practical thermal conductivity terms, a industrial high-temperature heat pipe ultra-conductive core equals 20 kW/(m·K), a graphene monocrystal in-plane acoustic phonon conductivity equals 4 kW/(m·K).
A physical magnitude of 1 kW/(m·K) corresponds to 1000 W/(m·K) in standard SI measurement.
1 kW/(m·K) = 1000 W/(m·K)Domain Metrology & Engineering Applications
Fourier's Law of Heat Conduction (q = -k · ∇T)
Rigorously quantified in laboratory and field settings using guarded hot plate apparatus (ASTM C177), laser flash thermal diffusivity analyzers, and transient plane source (TPS) sensors.
Applied across thermal interface material (TIM) development, architectural insulation manufacturing, aerospace heat shield design, and refractory ceramics under international metrology standard ISO 80000-5:2019, ASTM C177.
Formulas, conversion coefficients, and base definitions on this page strictly adhere to the ISO 80000-5:2019, ASTM C177 and the BIPM SI Brochure (9th Edition). Governed by Fourier's Law of Heat Conduction (q = -k · ∇T) under ISO 80000 dimensional vector [M L T⁻³ Θ⁻¹].
Thermal Conductivity to Heat Flux Density Bridge (W/m² • kW/m² • BTU/(h·ft²) • cal/(s·cm²))
Calculate Fourier conduction heat flux q" = k × ∇T across building envelopes and industrial heat exchangers, bridging thermal conductivity [M L T⁻³ Θ⁻¹] with heat flux density [M T⁻³].
q" = k × ∇T
[W/(m·K)] × [K/m] → [W/m²]
-
1. Normalize Input to SI Base Unit (W/(m·K)):
k = 1 Btu/(h·ft·°F) × 1.73073561 = 1.73073561 W/(m·K) -
2. Apply Engineering Parameter (∇T):
Selected condition: Insulated Wall Core (20K across 0.1m = 200 K/m) at ∇T = 200 K/m -
3. Execute Governing Physical Law in SI Units:
q" = k × ∇T = (1.73073561 W/(m·K)) × (200 K/m) = 346.147123 W/m² -
4. Convert to Standard Engineering Units:
• W/m²: 346.147123 × 1 = 346.1471 W/m² (Watts per Square Meter) • kW/m²: 346.147123 × 0.001 = 0.3461 kW/m² (Kilowatts per Square Meter) • BTU/(h·ft²): 346.147123 × 0.317 = 109.7281 BTU/(h·ft²) (BTU per Hour Sq. Foot) • cal/(s·cm²): 346.147123 × 2.3885 × 10⁻⁵ = 0.00826758 cal/(s·cm²) (Calories per Second Sq. Cm) • Ly/min: 346.147123 × 0.001433 = 0.4961 Ly/min (Langley per Minute) • MW/m²: 346.147123 × 1 × 10⁻⁶ = 0.00034615 MW/m² (Megawatts per Square Meter)
| Engineering Substance / Operating Standard | Parameter Value (K/m) | Reference State / Condition | Typical Industrial & Engineering Application |
|---|---|---|---|
| Insulated Wall Core (20K across 0.1m = 200 K/m) | 200 |
200 K/m | Standard residential fiberglass/mineral wool batt |
| Solid Brick Masonry (25K across 0.25m = 100 K/m) | 100 |
100 K/m | Architectural structural brick veneer wall |
| Steam Boiler Tube Wall (100K across 0.005m = 20,000 K/m) | 20000 |
20,000 K/m | Carbon steel heat recovery steam boiler tube |
| CPU Copper Heat Spreader (30K across 0.002m = 15,000 K/m) | 15000 |
15,000 K/m | Semiconductor thermal interface heat spreader |
Frequently Asked Questions
Related Btu/hour/foot/°F and Kilowatt/meter/kelvin Conversions
Convert Btu/hour/foot/°F to Other Units
Convert Other Units to Kilowatt/meter/kelvin
Physically Coupled Thermodynamics & Heat Converters
Explore interconnected physical dimension converters within the Thermodynamics & Heat cluster (ISO 80000-5:2019).
