7-12
  6. Interest Rate Conversion
  The procedures in this section describe how to convert between the annual percent rate and 
effective interest rate.
u Formula
  
   APR  :  annual percent rate (%)
   EFF  :  effective interest rate (%)
   n     :  number of compoundings
  
  
  
  Press  5(CONVERT) from the Financial 1 screen to display the following input screen for 
interest rate conversion.
  
5(CONVERT)
  
   n   ........... number of compoundings
   I  % ......... interest rate
  
  
  
  After configuring the parameters, use one of the function menus noted below to perform the 
corresponding calculation.
  • { 'EFF } … {converts annual percent rate to effective interest rate}
  • { 'APR } … {converts effective interest rate to annual percent rate}
  
  
  
  
  
  
  
  • An error occurs if parameters are not configured correctly.
  Use the following function menu to maneuver between calculation result screens.
  • { REPEAT } … {parameter input screen}
  
 
EFF = 
n
APR/100
1+
–1  × 100
n
 
EFF = 
n
APR/100
1+
–1  × 100
n
PR = 
100
EFF
1+ 
–1   × n ×100
1
n
PR = 
100
EFF
1+ 
–1   × n ×100
1
n