To make a constant available within a single procedure, you declare it at the procedure level

 

Sub ageSub()
    Const Age As Integer = 25
    '...instructions...
End Sub

1.	When declaring a constant, you can use any one of the following data types: Boolean, Byte, Integer, Long, Currency, Single, Double, Date, String, or Variant
2.	Working with Date type value Constants
3.	Use a constant in all the procedures of a module, use the Private keyword in front of the Const statement
4.	Make a constant available to all modules in your application, use the Public keyword in front of the Const statement.
5.	Constants can be declared on one line if separated by commas
6.	Working with Symbolic Constants
7.	use a Constant to store the PI
8.	Working with pre-defined Constant

To make a constant available within a single procedure, you declare it at the procedure level : Const « Language Basics « VBA / Excel / Access / Word