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Btus (th)/second/square inch to Calories (it)/second/square centimeter Converter (Btu (th)/(s·in²) to cal/(s·cm²))

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Live Conversion • ISO 80000-5:2019 Certified
1 Btu (th)/second/square inch = 39.03348531 Calorie (IT)/second/square centimeter
1 Btu (th)/(s·in²) = 39.033485 cal/(s·cm²) • 1 cal/(s·cm²) = 0.025619 Btu (th)/(s·in²)
Btu (th)/second/square inch to Calorie (IT)/second/square centimeter: One Btu (th)/second/square inch is equal to 39.03348531 Calories (it)/second/square centimeter.
Certified Authority Value
39.03348531
cal/(s·cm²)
Exact: 1 cal/(s·cm²) ≡ 0.0256190292 Btu (th)/(s·in²)
Btu (th)/(s·in²)
Btu (th)/(s·in²)
Swap to Calorie (IT)/second/square centimeter to Btu (th)/second/square inch
Swap to Calorie (IT)/second/square centimeter to Btu (th)/second/square inch
cal/(s·cm²)
cal/(s·cm²) 39.03348531
Quick Values:
Conversion Formula
To convert Btu (th)/second/square inch to Calorie (IT)/second/square centimeter, multiply by 39.03348531
Btu (th)/(s·in²) × 39.03348531 = cal/(s·cm²)

Calculation: 1 Btu (th)/(s·in²) × 39.03348531 = 39.03348531 cal/(s·cm²)

Common Btu (th)/second/square inch to Calorie (IT)/second/square centimeter Calculations

Quick-lookup reference table showing calculated equivalents for standard increments between Btu (th)/second/square inch (Btu (th)/(s·in²)) and Calorie (IT)/second/square centimeter (cal/(s·cm²)).

Tap any row to calculate
Btu (th)/second/square inch to Calorie (IT)/second/square centimeter: Primary Direct Table (15 Steps)
Btu (th)/second/square inch to Calorie (IT)/second/square centimeter Conversion Reference Table
Conversion & Equivalent Value Scientific Notation
0.001 Btu (th)/(s·in²) 0.0390335 cal/(s·cm²) 3.903 × 10⁻²
0.01 Btu (th)/(s·in²) 0.390335 cal/(s·cm²) 3.903 × 10⁻¹
0.1 Btu (th)/(s·in²) 3.903349 cal/(s·cm²) 3.903 × 10⁰
0.5 Btu (th)/(s·in²) 19.516743 cal/(s·cm²) 1.952 × 10¹
1 Btu (th)/(s·in²) 39.033485 cal/(s·cm²) 3.903 × 10¹
2 Btu (th)/(s·in²) 78.066971 cal/(s·cm²) 7.807 × 10¹
5 Btu (th)/(s·in²) 195.167427 cal/(s·cm²) 1.952 × 10²
10 Btu (th)/(s·in²) 390.334853 cal/(s·cm²) 3.903 × 10²
20 Btu (th)/(s·in²) 780.669706 cal/(s·cm²) 7.807 × 10²
25 Btu (th)/(s·in²) 975.837133 cal/(s·cm²) 9.758 × 10²
50 Btu (th)/(s·in²) 1951.674266 cal/(s·cm²) 1.952 × 10³
100 Btu (th)/(s·in²) 3903.348531 cal/(s·cm²) 3.903 × 10³
250 Btu (th)/(s·in²) 9758.371328 cal/(s·cm²) 9.758 × 10³
500 Btu (th)/(s·in²) 19516.742656 cal/(s·cm²) 1.952 × 10⁴
1000 Btu (th)/(s·in²) 39033.485313 cal/(s·cm²) 3.903 × 10⁴
Calorie (IT)/second/square centimeter to Btu (th)/second/square inch: Reciprocal Summary
Calorie (IT)/second/square centimeter to Btu (th)/second/square inch Conversion Reference Table
Reciprocal & Equivalent Value Scientific Notation
1 cal/(s·cm²) 0.025619 Btu (th)/(s·in²) 2.562 × 10⁻²
5 cal/(s·cm²) 0.128095 Btu (th)/(s·in²) 1.281 × 10⁻¹
10 cal/(s·cm²) 0.25619 Btu (th)/(s·in²) 2.562 × 10⁻¹
50 cal/(s·cm²) 1.280951 Btu (th)/(s·in²) 1.281 × 10⁰
100 cal/(s·cm²) 2.561903 Btu (th)/(s·in²) 2.562 × 10⁰
View Complete 15-Row Calorie (IT)/second/square centimeter to Btu (th)/second/square inch 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)/second/square inch (Btu (th)/(s·in²)) and Calorie (IT)/second/square centimeter (cal/(s·cm²)):

Btu (th)/second/square inch References:

  • Gas turbine first-stage stationary nozzle guide vane heat flux 0.5 Btu (th)/(s·in²)

Calorie (IT)/second/square centimeter References:

  • Welding oxy-acetylene torch flame concentrated heat flux 5 cal/(s·cm²)

Tap any benchmark above to automatically calculate its exact equivalent in Calorie (IT)/second/square centimeter.

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

How to Convert Btu (th)/second/square inch to Calorie (IT)/second/square centimeter

Converting Btu (th)/second/square inch (Btu (th)/(s·in²)) to Calorie (IT)/second/square centimeter (cal/(s·cm²)) is a core calculation in Heat Flux Density, which measures the rate of thermal energy transfer radiating or conducting through a unit area per second. 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)/second/square inch equals 39.033485 Calorie (IT)/second/square centimeter, while 1 cal/(s·cm²) equals 0.025619 Btu (th)/(s·in²).

Direct Factor1 Btu (th)/(s·in²) = 39.033485 cal/(s·cm²)
Inverse Ratio1 cal/(s·cm²) = 0.025619 Btu (th)/(s·in²)
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 (W/m²)) 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)/(s·in²) = 1634253.963066 watt per square meter (W/m²)
2. Target SI Bridge (ktarget):1 cal/(s·cm²) = 41868 watt per square meter (W/m²)
Step-by-step substitution for Btu (th)/second/square inch → Calorie (IT)/second/square centimeter:V(cal/(s·cm²)) = V(Btu (th)/(s·in²)) × ( 1634253.963066 / 41868 ) = V(Btu (th)/(s·in²)) × 39.033485
Mathematical FormulaValue in Calorie (IT)/second/square centimeter = Value in Btu (th)/second/square inch × 39.03348531Direct computational formula applied for standard conversion.
Worked Example

For an engineering input of 36 Btu (th)/(s·in²), applying the conversion factor yields exactly 1405.205471 cal/(s·cm²). At larger operational scale, 5000 Btu (th)/second/square inch corresponds to 195167.426563 cal/(s·cm²).

Inverse check: 1 cal/(s·cm²) = 0.025619 Btu (th)/(s·in²).

Understanding Btu (th)/second/square inch and Calorie (IT)/second/square centimeter

Btu (th)/second/square inch

Btu (th)/(s·in²)
Imperial / US

A Btu (th)/second/square inch (Btu (th)/(s·in²)) is an imperial and US customary unit for heat flux density.

Applications & Practical Context

In practical heat flux density terms, a gas turbine first-stage stationary nozzle guide vane heat flux equals 0.5 Btu (th)/(s·in²).

Physical Setup

A physical magnitude of 1 Btu (th)/(s·in²) corresponds to 1634253.963066 W/m² in standard SI measurement.

Conversion to SI Unit: watt per square meter (W/m²)
1 Btu (th)/(s·in²) = 1634253.963066 W/m²

Calorie (IT)/second/square centimeter

cal/(s·cm²)
Standard Unit

A Calorie (IT)/second/square centimeter (cal/(s·cm²)) is a recognized unit for heat flux density.

Applications & Practical Context

In practical heat flux density terms, a welding oxy-acetylene torch flame concentrated heat flux equals 5 cal/(s·cm²).

Physical Setup

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

Conversion to SI Unit: watt per square meter (W/m²)
1 cal/(s·cm²) = 41868 W/m²

Domain Metrology & Engineering Applications

Governing Law & Equation

Thermal Transmission Flux (q = Q̇ / A)

Measurement Instrumentation

Rigorously quantified in laboratory and field settings using Schmidt-Boelter heat flux gauges, differential thermopile foil transducers, and calibrated Gardon radiant gauges.

Primary Industry Sectors

Applied across rocket nozzle combustion chamber analysis, fire resistance testing (ASTM E119), furnace wall heat loss auditing, and hypersonic aerothermal design under international metrology standard ISO 80000-5:2019, ASME PTC 19.3.

Institutional Metrology & Standard Authority:

Formulas, conversion coefficients, and base definitions on this page strictly adhere to the ISO 80000-5:2019, ASME PTC 19.3 and the BIPM SI Brochure (9th Edition). Governed by Thermal Transmission Flux (q = Q̇ / A) under ISO 80000 dimensional vector [M T⁻³].

Multi-Variable Engineering Bridge Thermal Radiation & Power Dissipation

Heat Flux Density to Total Thermal Power Bridge (Watts • Kilowatts • Megawatts • BTU/h • Horsepower)

Calculate total continuous heat dissipation power P = q" × A across surface barriers and exchangers, bridging heat flux density [M T⁻³] with thermal power [M L² T⁻³].

P = q" × A
Vector: [W/m²] × [m²] → [W]
Live Calculated Bridge Equivalent:
1 Btu (th)/(s·in²) at Industrial Hydronic Radiator Panel (8 m²) = 1.3074 × 10⁷ W
Equals 13074.0317 kW • 13.074032 MW • 17532.5653 hp
SI Power
1.3074 × 10⁷
W
Watts
Grid / Utility
13074.0317
kW
Kilowatts
Power Plant
13.074032
MW
Megawatts
Mechanical Rating
17532.5653
hp
Horsepower (Mechanical)
Metric Horsepower
17775.7362
PS
Metric Horsepower (PS)
HVAC Thermal Rating
4.46 × 10⁷
BTU/h
BTU per Hour
  1. 1. Normalize Input to SI Base Unit (W/m²):
    q" = 1 Btu (th)/(s·in²) × 1634253.96306586 = 1634253.96306586 W/m²
  2. 2. Apply Engineering Parameter (A):
    Selected condition: Industrial Hydronic Radiator Panel (8 m²) at A = 8 m²
  3. 3. Execute Governing Physical Law in SI Units:
    P = q" × A = (1634253.96306586 W/m²) × (8 m²) = 1.307403 × 10⁷ W
  4. 4. Convert to Standard Engineering Units:
    • W: 1.307403 × 10⁷ × 1 = 1.3074 × 10⁷ W (Watts) • kW: 1.307403 × 10⁷ × 0.001 = 13074.0317 kW (Kilowatts) • MW: 1.307403 × 10⁷ × 1 × 10⁻⁶ = 13.074032 MW (Megawatts) • hp: 1.307403 × 10⁷ × 0.001341 = 17532.5653 hp (Horsepower (Mechanical)) • PS: 1.307403 × 10⁷ × 0.00136 = 17775.7362 PS (Metric Horsepower (PS)) • BTU/h: 1.307403 × 10⁷ × 3.4121 = 4.46 × 10⁷ BTU/h (BTU per Hour)
Explore Full Power Converter →
Engineering Substance / Operating Standard Parameter Value (m²) Reference State / Condition Typical Industrial & Engineering Application
Residential Window Glazing (4 m²) 4 4.0 m² Double-pane exterior window glass aperture
Industrial Hydronic Radiator Panel (8 m²) 8 8.0 m² Convective space heating radiator surface
Shell & Tube Heat Exchanger (50 m²) 50 50.0 m² Industrial process fluid cooling bundle
Power Boiler Waterwall (200 m²) 200 200.0 m² Thermal power plant steam generator wall
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Frequently Asked Questions

There are exactly 39.03348531 calories (it)/second/square centimeter (cal/(s·cm²)) in 1 btu (th)/second/square inch (Btu (th)/(s·in²)). To calculate larger amounts manually, simply multiply your total number of btus (th)/second/square inch by the conversion multiplier of 39.03348531.

The mathematical formula to convert btus (th)/second/square inch to calories (it)/second/square centimeter is: [value] * 39.03348531 = calories (it)/second/square centimeter. 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/square centimeter back to btus (th)/second/square inch, you must divide your starting value by 39.03348531. Our bidirectional tool automatically computes this inverse equation the moment you type into the calorie (it)/second/square centimeter input field.

1 Btu (th)/second/square inch is larger than 1 Calorie (IT)/second/square centimeter. Specifically, 1 Btu (th)/second/square inch equals exactly 39.03348531 calories (it)/second/square centimeter, making it 39.0335 times larger (a difference of 1.59 orders of magnitude). Therefore, quantities expressed in calories (it)/second/square centimeter require a larger numerical value to represent the same physical amount.

Under standard international measurement guidelines, 1 Btu (th)/second/square inch converts to 39.03348531 calories (it)/second/square centimeter. Precise numerical conversion factors ensure consistency across laboratory, engineering, and field data.