Original Spring Size  
    Wire Size Inside Diameter Length   Number of Springs    
         
             
                 
 
  Convert To  
    Number of Springs   Inside Diameter        
           
     
     
           
           
    Wire Size Inside Diameter Length   Life Cycles    
             
         
             
         
             
         
             
         
             
         
                 
 
  Provided by Pro Door Supply  
  The calculations are accurate to within + - 2,500 cycles and is designed to be a guide. This Spring Calculator is the property of Pro Door Supply and may be used to help correctly identify torsion spring conversions.