Heat Density Converter
Convert between different units of heat density including J/m², cal(th)/cm², langley, BTU/ft², and more. Essential for thermal analysis and heat transfer calculations.
Base Unit Conversions: 1 J/m² = 0.0000239006 cal(th)/cm², 1 J/m² = 0.0000239006 langley, 1 J/m² = 0.0000880551 Btu(IT)/ft², 1 J/m² = 0.000088114 Btu(th)/ft²
About Heat Density
Heat density refers to the amount of heat energy per unit area. It’s commonly used in thermal engineering, materials science, and building physics to analyze heat distribution and thermal performance.
This converter provides accurate conversions between the most common units used in scientific and engineering applications.
Conversion Factors
J/m² to cal(th)/cm²
1 J/m² = 0.0000239006 cal(th)/cm²
1 cal(th)/cm² = 41840 J/m²
J/m² to Langley
1 J/m² = 0.0000239006 langley
1 langley = 41840 J/m²
J/m² to BTU/ft²
1 J/m² = 0.0000880551 Btu(IT)/ft²
1 Btu(IT)/ft² = 11356.5267 J/m²
J/m² to BTU(th)/ft²
1 J/m² = 0.000088114 Btu(th)/ft²
1 Btu(th)/ft² = 11348.9318 J/m²
Frequently Asked Questions
What is the difference between heat flux and heat density?
Heat flux measures the rate of heat transfer per unit area (W/m²), while heat density measures the total heat energy per unit area (J/m²). Heat density is essentially the time integral of heat flux.
When would I use langley units?
The langley (Ly) is commonly used in solar radiation measurements, particularly in atmospheric sciences and solar energy applications. 1 langley equals 1 calorie per square centimeter.
What are typical heat density values?
Typical values range from 1-10 MJ/m² for daily solar radiation to 100-500 MJ/m² for annual solar exposure. In industrial processes, values can exceed 1 GJ/m² for high-intensity applications.