CDbl Function

Converts a numeric expression or string expression to a double type.

Syntax:

CDbl (Expression As Variant) As Double

Return value:

Double

Parameters:

Expression: Any string or numeric expression that you want to convert. To convert a string expression, the number must be entered using a dot "." as the decimal point and a comma "," as the thousands separator (for instance 123,456.78), which may differ from your Office language settings.

Error codes:

5 Invalid procedure call

Example:

Numeric expressions are displayed according Office language settings:

Sub ExampleCountryConvert
    MsgBox CDbl(1234.5678) ' 1234.5678
    MsgBox CInt(1234.5678) ' 1235
    MsgBox CLng(1234+5678) ' 6912
    MsgBox CSng(1234.5678) ' 1234.567749023

    MsgBox CDbl(expression := 5678.1234) ' 5678.1234
    MsgBox CInt(expression := 5678.1234) ' 5678
    MsgBox CLng(expression := 5678+1234) ' 6912
    MsgBox CSng(expression := 5678.1234) ' 5678.123535156
End Sub