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Btu (th) Feet/hour/sq. foot/°F to Kilowatts/meter/kelvin Converter (Btu (th)·ft/(h·ft²·°F) to kW/(m·K))

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1 Btu (th) foot/hour/sq. foot/°F = 0.0017295772 Kilowatt/meter/kelvin
1 Btu (th)·ft/(h·ft²·°F) = 0.00172958 kW/(m·K) • 1 kW/(m·K) = 578.175982 Btu (th)·ft/(h·ft²·°F)
Btu (th) foot/hour/sq. foot/°F to Kilowatt/meter/kelvin: One Btu (th) foot/hour/sq. foot/°F is equal to 0.0017295772 Kilowatts/meter/kelvin.
Certified Authority Value
0.00172958
kW/(m·K)
Exact: 1 kW/(m·K) ≡ 578.1759824336 Btu (th)·ft/(h·ft²·°F)
Btu (th)·ft/(h·ft²·°F)
Btu (th)·ft/(h·ft²·°F)
Swap to Kilowatt/meter/kelvin to Btu (th) foot/hour/sq. foot/°F
Swap to Kilowatt/meter/kelvin to Btu (th) foot/hour/sq. foot/°F
kW/(m·K)
kW/(m·K) 0.0017295772
Quick Values:
Conversion Formula
To convert Btu (th) foot/hour/sq. foot/°F to Kilowatt/meter/kelvin, multiply by 0.0017295772
Btu (th)·ft/(h·ft²·°F) × 0.0017295772 = kW/(m·K)

Calculation: 1 Btu (th)·ft/(h·ft²·°F) × 0.0017295772 = 0.0017295772 kW/(m·K)

Common Btu (th) foot/hour/sq. foot/°F to Kilowatt/meter/kelvin Calculations

Quick-lookup reference table showing calculated equivalents for standard increments between Btu (th) foot/hour/sq. foot/°F (Btu (th)·ft/(h·ft²·°F)) and Kilowatt/meter/kelvin (kW/(m·K)).

Tap any row to calculate
Btu (th) foot/hour/sq. foot/°F to Kilowatt/meter/kelvin: Primary Direct Table (15 Steps)
Btu (th) foot/hour/sq. foot/°F to Kilowatt/meter/kelvin Conversion Reference Table
Conversion & Equivalent Value Scientific Notation
0.001 Btu (th)·ft/(h·ft²·°F) 1.729577 × 10⁻⁶ kW/(m·K) 1.73 × 10⁻⁶
0.01 Btu (th)·ft/(h·ft²·°F) 1.729577 × 10⁻⁵ kW/(m·K) 1.73 × 10⁻⁵
0.1 Btu (th)·ft/(h·ft²·°F) 0.000172958 kW/(m·K) 1.73 × 10⁻⁴
0.5 Btu (th)·ft/(h·ft²·°F) 0.000864789 kW/(m·K) 8.648 × 10⁻⁴
1 Btu (th)·ft/(h·ft²·°F) 0.00172958 kW/(m·K) 1.73 × 10⁻³
2 Btu (th)·ft/(h·ft²·°F) 0.00345915 kW/(m·K) 3.459 × 10⁻³
5 Btu (th)·ft/(h·ft²·°F) 0.00864789 kW/(m·K) 8.648 × 10⁻³
10 Btu (th)·ft/(h·ft²·°F) 0.0172958 kW/(m·K) 1.73 × 10⁻²
20 Btu (th)·ft/(h·ft²·°F) 0.0345915 kW/(m·K) 3.459 × 10⁻²
25 Btu (th)·ft/(h·ft²·°F) 0.0432394 kW/(m·K) 4.324 × 10⁻²
50 Btu (th)·ft/(h·ft²·°F) 0.0864789 kW/(m·K) 8.648 × 10⁻²
100 Btu (th)·ft/(h·ft²·°F) 0.172958 kW/(m·K) 1.73 × 10⁻¹
250 Btu (th)·ft/(h·ft²·°F) 0.432394 kW/(m·K) 4.324 × 10⁻¹
500 Btu (th)·ft/(h·ft²·°F) 0.864789 kW/(m·K) 8.648 × 10⁻¹
1000 Btu (th)·ft/(h·ft²·°F) 1.729577 kW/(m·K) 1.73 × 10⁰
Kilowatt/meter/kelvin to Btu (th) foot/hour/sq. foot/°F: Reciprocal Summary
Kilowatt/meter/kelvin to Btu (th) foot/hour/sq. foot/°F Conversion Reference Table
Reciprocal & Equivalent Value Scientific Notation
1 kW/(m·K) 578.175982 Btu (th)·ft/(h·ft²·°F) 5.782 × 10²
5 kW/(m·K) 2890.879912 Btu (th)·ft/(h·ft²·°F) 2.891 × 10³
10 kW/(m·K) 5781.759824 Btu (th)·ft/(h·ft²·°F) 5.782 × 10³
50 kW/(m·K) 28908.799122 Btu (th)·ft/(h·ft²·°F) 2.891 × 10⁴
100 kW/(m·K) 57817.598243 Btu (th)·ft/(h·ft²·°F) 5.782 × 10⁴
View Complete 15-Row Kilowatt/meter/kelvin to Btu (th) foot/hour/sq. foot/°F Table

Real-World Context & Everyday Benchmarks

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To help contextualize these units in everyday life, science, and engineering, here are verified real-world reference points for Btu (th) foot/hour/sq. foot/°F (Btu (th)·ft/(h·ft²·°F)) and Kilowatt/meter/kelvin (kW/(m·K)):

Btu (th) foot/hour/sq. foot/°F References:

  • Commercial carbon structural steel beam thermal conductivity 26 Btu (th)·ft/(h·ft²·°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)

Tap any benchmark above to automatically calculate its exact equivalent in Kilowatt/meter/kelvin.

ISQ Dimension: [M L T⁻³ Θ⁻¹] Coherent SI Unit: watt per meter kelvin (W/(m·K)) Thermodynamics & Heat Transfer

How to Convert Btu (th) foot/hour/sq. foot/°F to Kilowatt/meter/kelvin

Converting Btu (th) foot/hour/sq. foot/°F (Btu (th)·ft/(h·ft²·°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 (th) foot/hour/sq. foot/°F equals 0.00172958 Kilowatt/meter/kelvin, while 1 kW/(m·K) equals 578.175982 Btu (th)·ft/(h·ft²·°F).

Direct Factor1 Btu (th)·ft/(h·ft²·°F) = 0.00172958 kW/(m·K)
Inverse Ratio1 kW/(m·K) = 578.175982 Btu (th)·ft/(h·ft²·°F)
Conversion ScaleMetric SI to British Imperial / US Customary Bridge
First-Principles SI Derivation ProofNIST SP 811 / ISO 80000 Compliance

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:

Vtarget=Vsource×(ksource→SIktarget→SI)V_{\text{target}} = V_{\text{source}} \times \left( \frac{k_{\text{source} \to \text{SI}}}{k_{\text{target} \to \text{SI}}} \right)
Universal Dimensional Conversion Law (ISO 80000 / NIST SP 811)
1. Source SI Bridge (ksource):1 Btu (th)·ft/(h·ft²·°F) = 1.729577 watt per meter kelvin (W/(m·K))
2. Target SI Bridge (ktarget):1 kW/(m·K) = 1000 watt per meter kelvin (W/(m·K))
Step-by-step substitution for Btu (th) foot/hour/sq. foot/°F → Kilowatt/meter/kelvin:V(kW/(m·K)) = V(Btu (th)·ft/(h·ft²·°F)) × ( 1.729577 / 1000 ) = V(Btu (th)·ft/(h·ft²·°F)) × 0.00172958
Mathematical FormulaValue in Kilowatt/meter/kelvin = Value in Btu (th) foot/hour/sq. foot/°F × 0.0017295772Direct computational formula applied for standard conversion.
Worked Example

For an engineering input of 15 Btu (th)·ft/(h·ft²·°F), applying the conversion factor yields exactly 0.0259437 kW/(m·K). At larger operational scale, 2500 Btu (th) foot/hour/sq. foot/°F corresponds to 4.323943 kW/(m·K).

Inverse check: 1 kW/(m·K) = 578.175982 Btu (th)·ft/(h·ft²·°F).

Understanding Btu (th) foot/hour/sq. foot/°F and Kilowatt/meter/kelvin

Btu (th) foot/hour/sq. foot/°F

Btu (th)·ft/(h·ft²·°F)
Imperial / US

A Btu (th) foot/hour/sq. foot/°F (Btu (th)·ft/(h·ft²·°F)) is an imperial and US customary unit for thermal conductivity.

Applications & Practical Context

In practical thermal conductivity terms, a commercial carbon structural steel beam thermal conductivity equals 26 Btu (th)·ft/(h·ft²·°F).

Physical Setup

A physical magnitude of 1 Btu (th)·ft/(h·ft²·°F) corresponds to 1.729577 W/(m·K) in standard SI measurement.

Conversion to SI Unit: watt per meter kelvin (W/(m·K))
1 Btu (th)·ft/(h·ft²·°F) = 1.729577 W/(m·K)

Kilowatt/meter/kelvin

kW/(m·K)
SI Multiple

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).

Physical Setup

A physical magnitude of 1 kW/(m·K) corresponds to 1000 W/(m·K) in standard SI measurement.

Conversion to SI Unit: watt per meter kelvin (W/(m·K))
1 kW/(m·K) = 1000 W/(m·K)

Domain Metrology & Engineering Applications

Governing Law & Equation

Fourier's Law of Heat Conduction (q = -k · ∇T)

Measurement Instrumentation

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.

Primary Industry Sectors

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.

Institutional Metrology & Standard Authority:

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].

Multi-Variable Engineering Bridge Heat Transfer & Conduction Physics

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
Vector: [W/(m·K)] × [K/m] → [W/m²]
Live Calculated Bridge Equivalent:
1 Btu (th)·ft/(h·ft²·°F) at Insulated Wall Core (20K across 0.1m = 200 K/m) = 345.9154 W/m²
Equals 0.3459 kW/m² • 109.6546 BTU/(h·ft²) • 0.00826205 cal/(s·cm²)
SI Heat Flux
345.9154
W/m²
Watts per Square Meter
Solar / Combustion
0.3459
kW/m²
Kilowatts per Square Meter
US Building Envelope
109.6546
BTU/(h·ft²)
BTU per Hour Sq. Foot
CGS Thermal
0.00826205
cal/(s·cm²)
Calories per Second Sq. Cm
Meteorology
0.4958
Ly/min
Langley per Minute
Furnace Flux
0.00034592
MW/m²
Megawatts per Square Meter
  1. 1. Normalize Input to SI Base Unit (W/(m·K)):
    k = 1 Btu (th)·ft/(h·ft²·°F) × 1.72957721 = 1.72957721 W/(m·K)
  2. 2. Apply Engineering Parameter (∇T):
    Selected condition: Insulated Wall Core (20K across 0.1m = 200 K/m) at ∇T = 200 K/m
  3. 3. Execute Governing Physical Law in SI Units:
    q" = k × ∇T = (1.72957721 W/(m·K)) × (200 K/m) = 345.915441 W/m²
  4. 4. Convert to Standard Engineering Units:
    • W/m²: 345.915441 × 1 = 345.9154 W/m² (Watts per Square Meter) • kW/m²: 345.915441 × 0.001 = 0.3459 kW/m² (Kilowatts per Square Meter) • BTU/(h·ft²): 345.915441 × 0.317 = 109.6546 BTU/(h·ft²) (BTU per Hour Sq. Foot) • cal/(s·cm²): 345.915441 × 2.3885 × 10⁻⁵ = 0.00826205 cal/(s·cm²) (Calories per Second Sq. Cm) • Ly/min: 345.915441 × 0.001433 = 0.4958 Ly/min (Langley per Minute) • MW/m²: 345.915441 × 1 × 10⁻⁶ = 0.00034592 MW/m² (Megawatts per Square Meter)
Explore Full Heat Flux Density Converter →
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
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Frequently Asked Questions

There are exactly 0.0017295772 kilowatts/meter/kelvin (kW/(m·K)) in 1 btu (th) foot/hour/sq. foot/°f (Btu (th)·ft/(h·ft²·°F)). To calculate larger amounts manually, simply multiply your total number of btu (th) feet/hour/sq. foot/°f by the conversion multiplier of 0.0017295772.

The mathematical formula to convert btu (th) feet/hour/sq. foot/°f to kilowatts/meter/kelvin is: [value] * 0.0017295772 = kilowatts/meter/kelvin. Rather than doing the math manually, you can use our high-precision online calculator to process this exact equation instantly without rounding errors.

To perform the reverse calculation from kilowatts/meter/kelvin back to btu (th) feet/hour/sq. foot/°f, you must divide your starting value by 0.0017295772. Our bidirectional tool automatically computes this inverse equation the moment you type into the kilowatt/meter/kelvin input field.

1 Kilowatt/meter/kelvin is larger than 1 Btu (th) foot/hour/sq. foot/°F. Specifically, 1 Btu (th) foot/hour/sq. foot/°F equals 0.0017295772 kilowatts/meter/kelvin, meaning 1 Kilowatt/meter/kelvin is 578.176 times larger than 1 Btu (th) foot/hour/sq. foot/°F (a difference of 2.76 orders of magnitude). Expressing measurements in btu (th) feet/hour/sq. foot/°f requires a larger numerical value to represent the equivalent physical magnitude.

Under standard international measurement guidelines, 1 Btu (th) foot/hour/sq. foot/°F converts to 0.0017295772 kilowatts/meter/kelvin. Precise numerical conversion factors ensure consistency across laboratory, engineering, and field data.