Heat Density / J/m² → Btu IT/ft²
Convert Joules per square meter to Btu IT per square foot
Convert heat energy per area, also called areal energy density. Convert Joules per square meter (J/m²) to Btu IT per square foot (Btu IT/ft²). Find the formula, worked examples, unit definitions, and practical guidance below.
Reverse: Btu IT per square foot to Joules per square meter →
How to convert joules per square meter to Btu IT per square foot
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 J/m², b for the intermediate value in J/m², and y for the result in Btu IT/ft².
Btu IT/ft² = J/m² ÷ 11356.526682226975
Worked examples
10 J/m² ≈ 0.000880550918412 Btu IT/ft²
Step 1: (10 × 1) ≈ 10 J/m².
Step 2: 10 ÷ 11356.5266822 ≈ 0.000880550918412 Btu IT/ft².20 J/m² ≈ 0.00176110183682 Btu IT/ft²
Step 1: (20 × 1) ≈ 20 J/m².
Step 2: 20 ÷ 11356.5266822 ≈ 0.00176110183682 Btu IT/ft².
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 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.
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.
Definitions and sources
Carry the same physical assumptions into subsequent physics calculations.
Joules per square meter to Btu IT per square foot reference table
| Joules per square meter (J/m²) | Btu IT per square foot (Btu IT/ft²) |
|---|---|
| 1 | 0.0000880550918412 |
| 5 | 0.000440275459206 |
| 10 | 0.000880550918412 |
| 25 | 0.00220137729603 |
| 50 | 0.00440275459206 |
| 100 | 0.00880550918412 |
| 1000 | 0.0880550918412 |
Browse every heat density conversion →