VBA Data Types: Double



If you want to use a decimal number that requires a good deal of precision, declare a variable using the Double data type. Here is an example of declaring a Double variable:

Sub Exercise()
    Dim Distance As Double
End Sub

Instead of As Double, the type character you can use is #:

Sub Exercise()
    Dim Distance#
End Sub

A Double variable can hold a number between 1.79769313486231e308 and
4.94065645841247e324 for negative values or between 4.94065645841247e324 and  1.79769313486231e308 for positive values.

To convert a value to double-precision, you can call the CDbl() function:

Number = CDbl(Value to Convert)

In the parentheses of CDbl(), enter the value that needs to be converted.


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