Heat Density conversion
1 btu (it)/square foot (Btu/ft²) equals 0.271427501912 langley (Ly). Enter any value below to convert from Btu/ft² to Ly.
Enter a value and choose units. Results update instantly.
1 Btu/ft² = 0.2714275019 Ly
| Unit | Value |
|---|---|
| Joule/square meter J/m² | 11,356.52668 |
| Langley Ly | 0.2714275019 |
| Btu (IT)/square foot Btu/ft² | 1 |
| Calorie (IT)/square centimeter cal/cm² | 0.2714275019 |
Formula
Use this relationship for a direct conversion:
2 Btu/ft² = 0.5428550038 Ly.
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
| Btu (IT)/square foot (Btu/ft²) | Langley (Ly) |
|---|---|
| 0.01 | 0.002714275 |
| 0.1 | 0.0271427502 |
| 1 | 0.2714275019 |
| 2 | 0.5428550038 |
| 5 | 1.3571375096 |
| 10 | 2.7142750191 |
| 25 | 6.7856875478 |
| 50 | 13.5713750956 |
| 100 | 27.1427501912 |
| 1,000 | 271.427501912 |
From unit
Btu (IT)/square foot (Btu/ft²) is a unit of Heat Density. 1 Btu/ft² = 11,356.52668 J/m²
Symbol: Btu/ft²
To unit
Langley (Ly) is a unit of Heat Density. 1 Ly = 41,840 J/m²
Symbol: Ly
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 Ly = Btu/ft² x 0.271427501912. 1 btu (it)/square foot (Btu/ft²) equals 0.271427501912 langley (Ly).
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.
