Skip to main content
0 results ↑ ↓ navigate, ↵ select

Kilocalories (it)/hour/square foot/°C to Joules/second/square meter/K Converter (kcal/(h·ft²·°C) to J/(s·m²·K))

Rate this converter 0 of 0 ratings
Instant calculation with 0ms overhead
Popular Converters
Live Conversion • ISO 80000-5:2019 Certified
1 Kilocalorie (IT)/hour/square foot/°C = 12.51846474 Joule/second/square meter/K
1 kcal/(h·ft²·°C) = 12.518465 J/(s·m²·K) • 1 J/(s·m²·K) = 0.079882 kcal/(h·ft²·°C)
Kilocalorie (IT)/hour/square foot/°C to Joule/second/square meter/K: One Kilocalorie (IT)/hour/square foot/°C is equal to 12.51846474 Joules/second/square meter/K.
Certified Authority Value
12.51846474
J/(s·m²·K)
Exact: 1 J/(s·m²·K) ≡ 0.079882 kcal/(h·ft²·°C)
kcal/(h·ft²·°C)
kcal/(h·ft²·°C)
Swap to Joule/second/square meter/K to Kilocalorie (IT)/hour/square foot/°C
Swap to Joule/second/square meter/K to Kilocalorie (IT)/hour/square foot/°C
J/(s·m²·K)
J/(s·m²·K) 12.51846474
Quick Values:
Conversion Formula
To convert Kilocalorie (IT)/hour/square foot/°C to Joule/second/square meter/K, multiply by 12.51846474
kcal/(h·ft²·°C) × 12.51846474 = J/(s·m²·K)

Calculation: 1 kcal/(h·ft²·°C) × 12.51846474 = 12.51846474 J/(s·m²·K)

Common Kilocalorie (IT)/hour/square foot/°C to Joule/second/square meter/K Calculations

Quick-lookup reference table showing calculated equivalents for standard increments between Kilocalorie (IT)/hour/square foot/°C (kcal/(h·ft²·°C)) and Joule/second/square meter/K (J/(s·m²·K)).

Tap any row to calculate
Kilocalorie (IT)/hour/square foot/°C to Joule/second/square meter/K: Primary Direct Table (15 Steps)
Kilocalorie (IT)/hour/square foot/°C to Joule/second/square meter/K Conversion Reference Table
Conversion & Equivalent Value Scientific Notation
0.001 kcal/(h·ft²·°C) 0.0125185 J/(s·m²·K) 1.252 × 10⁻²
0.01 kcal/(h·ft²·°C) 0.125185 J/(s·m²·K) 1.252 × 10⁻¹
0.1 kcal/(h·ft²·°C) 1.251846 J/(s·m²·K) 1.252 × 10⁰
0.5 kcal/(h·ft²·°C) 6.259232 J/(s·m²·K) 6.259 × 10⁰
1 kcal/(h·ft²·°C) 12.518465 J/(s·m²·K) 1.252 × 10¹
2 kcal/(h·ft²·°C) 25.036929 J/(s·m²·K) 2.504 × 10¹
5 kcal/(h·ft²·°C) 62.592324 J/(s·m²·K) 6.259 × 10¹
10 kcal/(h·ft²·°C) 125.184647 J/(s·m²·K) 1.252 × 10²
20 kcal/(h·ft²·°C) 250.369295 J/(s·m²·K) 2.504 × 10²
25 kcal/(h·ft²·°C) 312.961618 J/(s·m²·K) 3.13 × 10²
50 kcal/(h·ft²·°C) 625.923237 J/(s·m²·K) 6.259 × 10²
100 kcal/(h·ft²·°C) 1251.846474 J/(s·m²·K) 1.252 × 10³
250 kcal/(h·ft²·°C) 3129.616184 J/(s·m²·K) 3.13 × 10³
500 kcal/(h·ft²·°C) 6259.232368 J/(s·m²·K) 6.259 × 10³
1000 kcal/(h·ft²·°C) 12518.464735 J/(s·m²·K) 1.252 × 10⁴
Joule/second/square meter/K to Kilocalorie (IT)/hour/square foot/°C: Reciprocal Summary
Joule/second/square meter/K to Kilocalorie (IT)/hour/square foot/°C Conversion Reference Table
Reciprocal & Equivalent Value Scientific Notation
1 J/(s·m²·K) 0.079882 kcal/(h·ft²·°C) 7.988 × 10⁻²
5 J/(s·m²·K) 0.39941 kcal/(h·ft²·°C) 3.994 × 10⁻¹
10 J/(s·m²·K) 0.79882 kcal/(h·ft²·°C) 7.988 × 10⁻¹
50 J/(s·m²·K) 3.9941 kcal/(h·ft²·°C) 3.994 × 10⁰
100 J/(s·m²·K) 7.9882 kcal/(h·ft²·°C) 7.988 × 10⁰
View Complete 15-Row Joule/second/square meter/K to Kilocalorie (IT)/hour/square foot/°C Table

Real-World Context & Everyday Benchmarks

Tap to load into converter

To help contextualize these units in everyday life, science, and engineering, here are verified real-world reference points for Kilocalorie (IT)/hour/square foot/°C (kcal/(h·ft²·°C)) and Joule/second/square meter/K (J/(s·m²·K)):

Kilocalorie (IT)/hour/square foot/°C References:

  • Air heating ductwork uninsulated metallic surface heat loss 1.5 kcal/(h·ft²·°C)

Joule/second/square meter/K References:

  • Equivalent to W/(m²·K): Forced water cooling jacket convection 2500 J/(s·m²·K)

Tap any benchmark above to automatically calculate its exact equivalent in Joule/second/square meter/K.

ISQ Dimension: [M T⁻³ Θ⁻¹] Coherent SI Unit: watt per square meter kelvin (W/(m²·K)) Thermodynamics & Heat Transfer

How to Convert Kilocalorie (IT)/hour/square foot/°C to Joule/second/square meter/K

Converting Kilocalorie (IT)/hour/square foot/°C (kcal/(h·ft²·°C)) to Joule/second/square meter/K (J/(s·m²·K)) is a core calculation in Heat Transfer Coefficient, which quantifies the proportionality constant between the heat flux and the thermodynamic driving temperature difference. 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 Kilocalorie (IT)/hour/square foot/°C equals 12.518465 Joule/second/square meter/K, while 1 J/(s·m²·K) equals 0.079882 kcal/(h·ft²·°C).

Direct Factor1 kcal/(h·ft²·°C) = 12.518465 J/(s·m²·K)
Inverse Ratio1 J/(s·m²·K) = 0.079882 kcal/(h·ft²·°C)
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 square meter kelvin (W/(m²·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 kcal/(h·ft²·°C) = 12.518465 watt per square meter kelvin (W/(m²·K))
2. Target SI Bridge (ktarget):1 J/(s·m²·K) = 1 watt per square meter kelvin (W/(m²·K))
Step-by-step substitution for Kilocalorie (IT)/hour/square foot/°C → Joule/second/square meter/K:V(J/(s·m²·K)) = V(kcal/(h·ft²·°C)) × ( 12.518465 / 1 ) = V(kcal/(h·ft²·°C)) × 12.518465
Mathematical FormulaValue in Joule/second/square meter/K = Value in Kilocalorie (IT)/hour/square foot/°C × 12.51846474Direct computational formula applied for standard conversion.
Worked Example

Evaluating an input of 50 Kilocalorie (IT)/hour/square foot/°C (kcal/(h·ft²·°C)) produces 625.923237 Joule/second/square meter/K (J/(s·m²·K)). In heavy-duty utility and industrial workloads, 10000 kcal/(h·ft²·°C) equals 125184.647355 J/(s·m²·K).

Inverse check: 1 J/(s·m²·K) = 0.079882 kcal/(h·ft²·°C).

Understanding Kilocalorie (IT)/hour/square foot/°C and Joule/second/square meter/K

Kilocalorie (IT)/hour/square foot/°C

kcal/(h·ft²·°C)
SI Multiple

A Kilocalorie (IT)/hour/square foot/°C (kcal/(h·ft²·°C)) is a decimal multiple of the SI-derived unit for heat transfer coefficient.

Applications & Practical Context

In practical heat transfer coefficient terms, a air heating ductwork uninsulated metallic surface heat loss equals 1.5 kcal/(h·ft²·°C).

Physical Setup

A physical magnitude of 1 kcal/(h·ft²·°C) corresponds to 12.518465 W/(m²·K) in standard SI measurement.

Conversion to SI Unit: watt per square meter kelvin (W/(m²·K))
1 kcal/(h·ft²·°C) = 12.518465 W/(m²·K)

Joule/second/square meter/K

J/(s·m²·K)
Standard Unit

A Joule/second/square meter/K (J/(s·m²·K)) is a recognized unit for heat transfer coefficient.

Applications & Practical Context

In practical heat transfer coefficient terms, a equivalent to W/(m²·K): Forced water cooling jacket convection equals 2500 J/(s·m²·K).

Physical Setup

A heat transfer coefficient of 1 J/(s·m²·K) yields 1 watt of thermal energy transfer per square meter for each kelvin difference.

Conversion to SI Unit: watt per square meter kelvin (W/(m²·K))
1 J/(s·m²·K) = 1 W/(m²·K)

Domain Metrology & Engineering Applications

Governing Law & Equation

Newton's Law of Cooling (q = h · ΔT)

Measurement Instrumentation

Rigorously quantified in laboratory and field settings using surface heat flux transducer plates coupled with surface RTD arrays, and wind tunnel boundary layer calorimeters.

Primary Industry Sectors

Applied across industrial heat exchanger rating, nuclear reactor cooling loop simulation, electronics forced-air cooling, and architectural U-value certification under international metrology standard ISO 80000-5:2019, ASME PTC.

Institutional Metrology & Standard Authority:

Formulas, conversion coefficients, and base definitions on this page strictly adhere to the ISO 80000-5:2019, ASME PTC and the BIPM SI Brochure (9th Edition). Governed by Newton's Law of Cooling (q = h · ΔT) under ISO 80000 dimensional vector [M T⁻³ Θ⁻¹].

Multi-Variable Engineering Bridge Convective Thermodynamics & Cooling

Heat Transfer Coefficient to Convective Flux Bridge (W/m² • kW/m² • BTU/(h·ft²) • cal/(s·cm²))

Calculate Newton’s law of cooling convective heat flux q" = h × ΔT across convective film temperature drops, bridging heat transfer coefficient [M T⁻³ Θ⁻¹] with heat flux [M T⁻³].

q" = h × ΔT
Vector: [W/(m²·K)] × [K] → [W/m²]
Live Calculated Bridge Equivalent:
1 kcal/(h·ft²·°C) at Forced Air Duct Cooling (ΔT = 25 K) = 312.9616 W/m²
Equals 0.313 kW/m² • 99.2083 BTU/(h·ft²) • 0.00747496 cal/(s·cm²)
SI Heat Flux
312.9616
W/m²
Watts per Square Meter
Solar / Combustion
0.313
kW/m²
Kilowatts per Square Meter
US Building Envelope
99.2083
BTU/(h·ft²)
BTU per Hour Sq. Foot
CGS Thermal
0.00747496
cal/(s·cm²)
Calories per Second Sq. Cm
Meteorology
0.4486
Ly/min
Langley per Minute
Furnace Flux
0.00031296
MW/m²
Megawatts per Square Meter
  1. 1. Normalize Input to SI Base Unit (W/(m²·K)):
    h = 1 kcal/(h·ft²·°C) × 12.51846474 = 12.51846474 W/(m²·K)
  2. 2. Apply Engineering Parameter (ΔT):
    Selected condition: Forced Air Duct Cooling (ΔT = 25 K) at ΔT = 25 K
  3. 3. Execute Governing Physical Law in SI Units:
    q" = h × ΔT = (12.51846474 W/(m²·K)) × (25 K) = 312.961618 W/m²
  4. 4. Convert to Standard Engineering Units:
    • W/m²: 312.961618 × 1 = 312.9616 W/m² (Watts per Square Meter) • kW/m²: 312.961618 × 0.001 = 0.313 kW/m² (Kilowatts per Square Meter) • BTU/(h·ft²): 312.961618 × 0.317 = 99.2083 BTU/(h·ft²) (BTU per Hour Sq. Foot) • cal/(s·cm²): 312.961618 × 2.3885 × 10⁻⁵ = 0.00747496 cal/(s·cm²) (Calories per Second Sq. Cm) • Ly/min: 312.961618 × 0.001433 = 0.4486 Ly/min (Langley per Minute) • MW/m²: 312.961618 × 1 × 10⁻⁶ = 0.00031296 MW/m² (Megawatts per Square Meter)
Explore Full Heat Flux Density Converter →
Engineering Substance / Operating Standard Parameter Value (K) Reference State / Condition Typical Industrial & Engineering Application
Natural Air Convection (ΔT = 15 K) 15 ΔT = 15 K (15°C) Still room air room heating surface delta
Forced Air Duct Cooling (ΔT = 25 K) 25 ΔT = 25 K (25°C) Forced fan ventilation heatsink airflow
Forced Liquid Water Cooling (ΔT = 30 K) 30 ΔT = 30 K Pumped liquid cold plate or engine jacket
Nucleate Boiling Heat Transfer (ΔT = 50 K) 50 ΔT = 50 K Boiler evaporator tube wall boundary
Embed
Need this Kilocalorie (IT)/hour/square foot/°C to Joule/second/square meter/K calculator on your website, lab portal, or research blog?
Free HTML Widget 100% Responsive Zero Cookie Tracking
Notice a calculation discrepancy, rounding error, or glitch?
Help us maintain 100% scientific precision and report any issues directly to engineering.

Frequently Asked Questions

There are exactly 12.51846474 joules/second/square meter/k (J/(s·m²·K)) in 1 kilocalorie (it)/hour/square foot/°c (kcal/(h·ft²·°C)). To calculate larger amounts manually, simply multiply your total number of kilocalories (it)/hour/square foot/°c by the conversion multiplier of 12.51846474.

The mathematical formula to convert kilocalories (it)/hour/square foot/°c to joules/second/square meter/k is: [value] * 12.51846474 = joules/second/square meter/k. 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 joules/second/square meter/k back to kilocalories (it)/hour/square foot/°c, you must divide your starting value by 12.51846474. Our bidirectional tool automatically computes this inverse equation the moment you type into the joule/second/square meter/k input field.

1 Kilocalorie (IT)/hour/square foot/°C is larger than 1 Joule/second/square meter/K. Specifically, 1 Kilocalorie (IT)/hour/square foot/°C equals exactly 12.51846474 joules/second/square meter/k, making it 12.5185 times larger (a difference of 1.10 orders of magnitude). Therefore, quantities expressed in joules/second/square meter/k require a larger numerical value to represent the same physical amount.

Under standard international measurement guidelines, 1 Kilocalorie (IT)/hour/square foot/°C converts to 12.51846474 joules/second/square meter/k. Precise numerical conversion factors ensure consistency across laboratory, engineering, and field data.