Heat Density Converter
Heat density measures thermal energy contained in a given volume. Used in fuel energy content and thermal storage materials.
Common Heat Density Conversions
| From | To |
|---|---|
| 1 J/m³ | 9.478×10⁻⁷ BTU/ft³ |
| 1 BTU/ft³ | 1.05506×10⁷ J/m³ |
| 1 cal/cm³ | 4.186×10⁷ J/m³ |
Heat Density Unit Definitions
- Joule per cubic meter (J/m³)
- SI unit of energy density.
- BTU per cubic foot (BTU/ft³)
- Imperial unit; used for natural gas heating values.
- Calorie per cm³ (cal/cm³)
- Used in food energy context: 1 cal/cm³ = 1 kcal/L ~ water energy content.
Frequently Asked Questions
What is the energy density of natural gas?
About 35–40 MJ/m³ or ~1,000 BTU/ft³.
How is heat density different from specific heat?
Heat density is total energy stored per volume; specific heat is energy per mass per degree temperature change.
What is the heat density of common fuels?
Gasoline: ~34 MJ/L. Diesel: ~37 MJ/L. Lithium-ion battery: ~1–2 MJ/L. Hydrogen gas at STP: ~10 MJ/m³ (much lower than liquid fuels).