system engineering
     
     
     
     
     
 
 
 
 
 
 
 
 

British and US Units

 
Energy Pressure Area Force Length Power Light Mass Volume
 

Energy Units

 
Unit Symbol SI Equivalent Conversion Factor
British thermal unit Btu, BTU 4,186 J 0,23889
foot-pound-weight ft lb wt 1,35582 J 0,73756
foot-pound-force ft Lb, ft lbf 1,35582 J 0,73756
horse-power hour hph, HPhr 2,68452 MJ 0,372506

Conversion Calculator

 
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