Heat Density conversion
1 langley (Ly) equals 3.684225043356 btu (it)/square foot (Btu/ft²). Enter any value below to convert from Ly to Btu/ft².
Enter a value and choose units. Results update instantly.
1 Ly = 3.6842250434 Btu/ft²
| Unit | Value |
|---|---|
| Joule/square meter J/m² | 41,840 |
| Langley Ly | 1 |
| Btu (IT)/square foot Btu/ft² | 3.6842250434 |
| Calorie (IT)/square centimeter cal/cm² | 1 |
Formula
Use this relationship for a direct conversion:
2 Ly = 7.3684500867 Btu/ft².
SI relationships follow the cited reference. Conventional and domain-specific factors use the established ConvertWin factor inventory; verify safety-critical work against the governing standard.
Quick reference
| Langley (Ly) | Btu (IT)/square foot (Btu/ft²) |
|---|---|
| 0.01 | 0.0368422504 |
| 0.1 | 0.3684225043 |
| 1 | 3.6842250434 |
| 2 | 7.3684500867 |
| 5 | 18.4211252168 |
| 10 | 36.8422504336 |
| 25 | 92.1056260839 |
| 50 | 184.2112521678 |
| 100 | 368.4225043356 |
| 1,000 | 3,684.2250433563 |
From unit
Langley (Ly) is a unit of Heat Density. 1 Ly = 41,840 J/m²
Symbol: Ly
To unit
Btu (IT)/square foot (Btu/ft²) is a unit of Heat Density. 1 Btu/ft² = 11,356.52668 J/m²
Symbol: Btu/ft²
Keep converting
Source
The SI framework is checked against NIST Guide for the Use of the International System of Units; conventional factors come from the extended factor inventory. Calculations use full internal precision before display rounding.
View the complete heat density converterQuestions
Use the formula Btu/ft² = Ly x 3.684225043356. 1 langley (Ly) equals 3.684225043356 btu (it)/square foot (Btu/ft²).
SI relationships follow the cited reference. Conventional and domain-specific factors use the established ConvertWin factor inventory; verify safety-critical work against the governing standard.
