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

Btus (IT)/hour/sq. foot/°F to Calories (it)/second/cm²/°C Converter (Btu/(h·ft²·°F) to cal/(s·cm²·°C))

Rate this converter 0 of 0 ratings
Instant calculation with 0ms overhead
Popular Converters
Live Conversion • ISO 80000-5:2019 Certified
1 BTU (IT)/hour/sq. foot/°F = 0.00013562299 Calorie (IT)/second/cm²/°C
1 Btu/(h·ft²·°F) = 0.000135623 cal/(s·cm²·°C) • 1 cal/(s·cm²·°C) = 7373.381181 Btu/(h·ft²·°F)
BTU (IT)/hour/sq. foot/°F to Calorie (IT)/second/cm²/°C: One BTU (IT)/hour/sq. foot/°F is equal to 0.00013562299 Calories (it)/second/cm²/°C.
Certified Authority Value
0.00013562
cal/(s·cm²·°C)
Exact: 1 cal/(s·cm²·°C) ≡ 7373.3811805135 Btu/(h·ft²·°F)
Btu/(h·ft²·°F)
Btu/(h·ft²·°F)
Swap to Calorie (IT)/second/cm²/°C to BTU (IT)/hour/sq. foot/°F
Swap to Calorie (IT)/second/cm²/°C to BTU (IT)/hour/sq. foot/°F
cal/(s·cm²·°C)
cal/(s·cm²·°C) 0.00013562299
Quick Values:
Conversion Formula
To convert BTU (IT)/hour/sq. foot/°F to Calorie (IT)/second/cm²/°C, multiply by 0.00013562299
Btu/(h·ft²·°F) × 0.00013562299 = cal/(s·cm²·°C)

Calculation: 1 Btu/(h·ft²·°F) × 0.00013562299 = 0.00013562299 cal/(s·cm²·°C)

Common BTU (IT)/hour/sq. foot/°F to Calorie (IT)/second/cm²/°C Calculations

Quick-lookup reference table showing calculated equivalents for standard increments between BTU (IT)/hour/sq. foot/°F (Btu/(h·ft²·°F)) and Calorie (IT)/second/cm²/°C (cal/(s·cm²·°C)).

Tap any row to calculate
BTU (IT)/hour/sq. foot/°F to Calorie (IT)/second/cm²/°C: Primary Direct Table (15 Steps)
BTU (IT)/hour/sq. foot/°F to Calorie (IT)/second/cm²/°C Conversion Reference Table
Conversion & Equivalent Value Scientific Notation
0.001 Btu/(h·ft²·°F) 1.35623 × 10⁻⁷ cal/(s·cm²·°C) 1.356 × 10⁻⁷
0.01 Btu/(h·ft²·°F) 1.35623 × 10⁻⁶ cal/(s·cm²·°C) 1.356 × 10⁻⁶
0.1 Btu/(h·ft²·°F) 1.35623 × 10⁻⁵ cal/(s·cm²·°C) 1.356 × 10⁻⁵
0.5 Btu/(h·ft²·°F) 6.781149 × 10⁻⁵ cal/(s·cm²·°C) 6.781 × 10⁻⁵
1 Btu/(h·ft²·°F) 0.000135623 cal/(s·cm²·°C) 1.356 × 10⁻⁴
2 Btu/(h·ft²·°F) 0.000271246 cal/(s·cm²·°C) 2.712 × 10⁻⁴
5 Btu/(h·ft²·°F) 0.000678115 cal/(s·cm²·°C) 6.781 × 10⁻⁴
10 Btu/(h·ft²·°F) 0.00135623 cal/(s·cm²·°C) 1.356 × 10⁻³
20 Btu/(h·ft²·°F) 0.00271246 cal/(s·cm²·°C) 2.712 × 10⁻³
25 Btu/(h·ft²·°F) 0.00339057 cal/(s·cm²·°C) 3.391 × 10⁻³
50 Btu/(h·ft²·°F) 0.00678115 cal/(s·cm²·°C) 6.781 × 10⁻³
100 Btu/(h·ft²·°F) 0.0135623 cal/(s·cm²·°C) 1.356 × 10⁻²
250 Btu/(h·ft²·°F) 0.0339057 cal/(s·cm²·°C) 3.391 × 10⁻²
500 Btu/(h·ft²·°F) 0.0678115 cal/(s·cm²·°C) 6.781 × 10⁻²
1000 Btu/(h·ft²·°F) 0.135623 cal/(s·cm²·°C) 1.356 × 10⁻¹
Calorie (IT)/second/cm²/°C to BTU (IT)/hour/sq. foot/°F: Reciprocal Summary
Calorie (IT)/second/cm²/°C to BTU (IT)/hour/sq. foot/°F Conversion Reference Table
Reciprocal & Equivalent Value Scientific Notation
1 cal/(s·cm²·°C) 7373.381181 Btu/(h·ft²·°F) 7.373 × 10³
5 cal/(s·cm²·°C) 36866.905903 Btu/(h·ft²·°F) 3.687 × 10⁴
10 cal/(s·cm²·°C) 73733.811805 Btu/(h·ft²·°F) 7.373 × 10⁴
50 cal/(s·cm²·°C) 368669.059026 Btu/(h·ft²·°F) 3.687 × 10⁵
100 cal/(s·cm²·°C) 737338.118051 Btu/(h·ft²·°F) 7.373 × 10⁵
View Complete 15-Row Calorie (IT)/second/cm²/°C to BTU (IT)/hour/sq. foot/°F 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 BTU (IT)/hour/sq. foot/°F (Btu/(h·ft²·°F)) and Calorie (IT)/second/cm²/°C (cal/(s·cm²·°C)):

BTU (IT)/hour/sq. foot/°F References:

  • Stationary ambient air natural free convection on vertical wall 0.880551 Btu/(h·ft²·°F)
  • Forced air breeze blowing across automotive cooling radiator 8.8055 Btu/(h·ft²·°F)
  • Liquid water forced circulation inside heat exchanger pipe 528.33 Btu/(h·ft²·°F)
  • Nucleate boiling heat transfer in pressurized steam boiler tube 2641.65 Btu/(h·ft²·°F)

Calorie (IT)/second/cm²/°C References:

  • Stationary ambient air natural free convection on vertical wall 0.000119 cal/(s·cm²·°C)
  • Forced air breeze blowing across automotive cooling radiator 0.001194 cal/(s·cm²·°C)
  • Liquid water forced circulation inside heat exchanger pipe 0.071654 cal/(s·cm²·°C)
  • Nucleate boiling heat transfer in pressurized steam boiler tube 0.358269 cal/(s·cm²·°C)

Tap any benchmark above to automatically calculate its exact equivalent in Calorie (IT)/second/cm²/°C.

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

How to Convert BTU (IT)/hour/sq. foot/°F to Calorie (IT)/second/cm²/°C

Converting BTU (IT)/hour/sq. foot/°F (Btu/(h·ft²·°F)) to Calorie (IT)/second/cm²/°C (cal/(s·cm²·°C)) 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 BTU (IT)/hour/sq. foot/°F equals 0.000135623 Calorie (IT)/second/cm²/°C, while 1 cal/(s·cm²·°C) equals 7373.381181 Btu/(h·ft²·°F).

Direct Factor1 Btu/(h·ft²·°F) = 0.000135623 cal/(s·cm²·°C)
Inverse Ratio1 cal/(s·cm²·°C) = 7373.381181 Btu/(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 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 Btu/(h·ft²·°F) = 5.678263 watt per square meter kelvin (W/(m²·K))
2. Target SI Bridge (ktarget):1 cal/(s·cm²·°C) = 41868 watt per square meter kelvin (W/(m²·K))
Step-by-step substitution for BTU (IT)/hour/sq. foot/°F → Calorie (IT)/second/cm²/°C:V(cal/(s·cm²·°C)) = V(Btu/(h·ft²·°F)) × ( 5.678263 / 41868 ) = V(Btu/(h·ft²·°F)) × 0.000135623
Mathematical FormulaValue in Calorie (IT)/second/cm²/°C = Value in BTU (IT)/hour/sq. foot/°F × 0.00013562299Direct computational formula applied for standard conversion.
Worked Example

To convert 50 BTU (IT)/hour/sq. foot/°F (Btu/(h·ft²·°F)) to Calorie (IT)/second/cm²/°C (cal/(s·cm²·°C)): multiply 50 by 0.000135623 to get 0.00678115 cal/(s·cm²·°C). At an industrial engineering scale, 1000 Btu/(h·ft²·°F) converts to 0.135623 cal/(s·cm²·°C).

Inverse check: 1 cal/(s·cm²·°C) = 7373.381181 Btu/(h·ft²·°F).

Understanding BTU (IT)/hour/sq. foot/°F and Calorie (IT)/second/cm²/°C

BTU (IT)/hour/sq. foot/°F

Btu/(h·ft²·°F)
Imperial / US

A BTU (IT)/hour/sq. foot/°F (Btu/(h·ft²·°F)) is an imperial and US customary unit for heat transfer coefficient.

Applications & Practical Context

In practical heat transfer coefficient terms, a stationary ambient air natural free convection on vertical wall equals 0.880551 Btu/(h·ft²·°F), a forced air breeze blowing across automotive cooling radiator equals 8.8055 Btu/(h·ft²·°F), a liquid water forced circulation inside heat exchanger pipe equals 528.33 Btu/(h·ft²·°F).

Physical Setup

A physical magnitude of 1 Btu/(h·ft²·°F) corresponds to 5.678263 W/(m²·K) in standard SI measurement.

Conversion to SI Unit: watt per square meter kelvin (W/(m²·K))
1 Btu/(h·ft²·°F) = 5.678263 W/(m²·K)

Calorie (IT)/second/cm²/°C

cal/(s·cm²·°C)
Standard Unit

A Calorie (IT)/second/cm²/°C (cal/(s·cm²·°C)) is a recognized unit for heat transfer coefficient.

Applications & Practical Context

In practical heat transfer coefficient terms, a stationary ambient air natural free convection on vertical wall equals 0.000119 cal/(s·cm²·°C), a forced air breeze blowing across automotive cooling radiator equals 0.001194 cal/(s·cm²·°C), a liquid water forced circulation inside heat exchanger pipe equals 0.071654 cal/(s·cm²·°C).

Physical Setup

A physical magnitude of 1 cal/(s·cm²·°C) corresponds to 41868 W/(m²·K) in standard SI measurement.

Conversion to SI Unit: watt per square meter kelvin (W/(m²·K))
1 cal/(s·cm²·°C) = 41868 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 Btu/(h·ft²·°F) at Forced Air Duct Cooling (ΔT = 25 K) = 141.9566 W/m²
Equals 0.142 kW/m² • 45 BTU/(h·ft²) • 0.00339057 cal/(s·cm²)
SI Heat Flux
141.9566
W/m²
Watts per Square Meter
Solar / Combustion
0.142
kW/m²
Kilowatts per Square Meter
US Building Envelope
45
BTU/(h·ft²)
BTU per Hour Sq. Foot
CGS Thermal
0.00339057
cal/(s·cm²)
Calories per Second Sq. Cm
Meteorology
0.2035
Ly/min
Langley per Minute
Furnace Flux
0.00014196
MW/m²
Megawatts per Square Meter
  1. 1. Normalize Input to SI Base Unit (W/(m²·K)):
    h = 1 Btu/(h·ft²·°F) × 5.67826333 = 5.67826333 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 = (5.67826333 W/(m²·K)) × (25 K) = 141.956583 W/m²
  4. 4. Convert to Standard Engineering Units:
    • W/m²: 141.956583 × 1 = 141.9566 W/m² (Watts per Square Meter) • kW/m²: 141.956583 × 0.001 = 0.142 kW/m² (Kilowatts per Square Meter) • BTU/(h·ft²): 141.956583 × 0.317 = 45 BTU/(h·ft²) (BTU per Hour Sq. Foot) • cal/(s·cm²): 141.956583 × 2.3885 × 10⁻⁵ = 0.00339057 cal/(s·cm²) (Calories per Second Sq. Cm) • Ly/min: 141.956583 × 0.001433 = 0.2035 Ly/min (Langley per Minute) • MW/m²: 141.956583 × 1 × 10⁻⁶ = 0.00014196 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 BTU (IT)/hour/sq. foot/°F to Calorie (IT)/second/cm²/°C 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 0.00013562299 calories (it)/second/cm²/°c (cal/(s·cm²·°C)) in 1 btu (it)/hour/sq. foot/°f (Btu/(h·ft²·°F)). To calculate larger amounts manually, simply multiply your total number of btus (it)/hour/sq. foot/°f by the conversion multiplier of 0.00013562299.

The mathematical formula to convert btus (it)/hour/sq. foot/°f to calories (it)/second/cm²/°c is: [value] * 0.00013562299 = calories (it)/second/cm²/°c. 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 calories (it)/second/cm²/°c back to btus (it)/hour/sq. foot/°f, you must divide your starting value by 0.00013562299. Our bidirectional tool automatically computes this inverse equation the moment you type into the calorie (it)/second/cm²/°c input field.

1 Calorie (IT)/second/cm²/°C is larger than 1 BTU (IT)/hour/sq. foot/°F. Specifically, 1 BTU (IT)/hour/sq. foot/°F equals 0.00013562299 calories (it)/second/cm²/°c, meaning 1 Calorie (IT)/second/cm²/°C is 7373.3812 times larger than 1 BTU (IT)/hour/sq. foot/°F (a difference of 3.87 orders of magnitude). Expressing measurements in btus (it)/hour/sq. foot/°f requires a larger numerical value to represent the equivalent physical magnitude.

Under standard international measurement guidelines, 1 BTU (IT)/hour/sq. foot/°F converts to 0.00013562299 calories (it)/second/cm²/°c. Precise numerical conversion factors ensure consistency across laboratory, engineering, and field data.