Heat Density / Btu IT/ft² → J/m²
Convert Btu IT per square foot to Joules per square meter
Convert heat energy per area, also called areal energy density. Convert Btu IT per square foot (Btu IT/ft²) to Joules per square meter (J/m²). Find the formula, worked examples, unit definitions, and practical guidance below.
Reverse: Joules per square meter to Btu IT per square foot →
How to convert Btu IT per square foot to joules per square meter
This family follows the heat-per-surface-area convention J/m². Volumetric heat density J/m³ would need a thickness to relate to it. Energy density is not a rate of heat flow.
Use x for the value in Btu IT/ft², b for the intermediate value in J/m², and y for the result in J/m².
J/m² = Btu IT/ft² × 11356.526682226975
Worked examples
10 Btu IT/ft² ≈ 113565.266822 J/m²
Step 1: (10 × 11356.5266822) ≈ 113565.266822 J/m².
Step 2: 113565.266822 ÷ 1 ≈ 113565.266822 J/m².20 Btu IT/ft² ≈ 227130.533645 J/m²
Step 1: (20 × 11356.5266822) ≈ 227130.533645 J/m².
Step 2: 227130.533645 ÷ 1 ≈ 227130.533645 J/m².
Results are rounded to 12 significant digits. Converting units does not increase the precision of the original measurement. Very large or small values outside JavaScript’s finite numeric range are rejected.
About Btu IT per square foot
Btu IT per square foot (Btu IT/ft²) measures heat density under the conventions above. The base value in J/m² is (x × 11356.5266822), where x is the numerical value in Btu IT/ft². Factors shown here are rounded for display; calculations use the stored factor.
About Joules per square meter
Joules per square meter (J/m²) measures heat density under the conventions above. The base value in J/m² is (x × 1), where x is the numerical value in J/m². Factors shown here are rounded for display; calculations use the stored factor.
Definitions and sources
Carry the same physical assumptions into subsequent physics calculations.
Btu IT per square foot to joules per square meter reference table
| Btu IT per square foot (Btu IT/ft²) | Joules per square meter (J/m²) |
|---|---|
| 1 | 11356.5266822 |
| 5 | 56782.6334111 |
| 10 | 113565.266822 |
| 25 | 283913.167056 |
| 50 | 567826.334111 |
| 100 | 1135652.66822 |
| 1000 | 11356526.6822 |
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