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British thermal unit (therm.) per hour per square foot
Symbol:  Btu (therm.)/h-ft2 
Category:  Energy flux 
SI Equivalent:  3.15248 W/m2
Dimension MT-3 
System:  UK, US 
Convert     Btu (therm.)/h-ft2  
1 Btu (therm.)/h-ft2 =
Energy flux
  Symbol Unit Name
0.999331  Btu (IT)/h-ft2  British thermal unit (IT) per hour per square foot 
4.51969×10-3  ly  langley (flux) 
3.15248  W/m2  watt per square meter 
Glossary