Mid

Extract a substring from a string, starting at a given position.

Syntax
      Mid(string, start_position, [number_of_chars])

      Mid$(string, start_position, [number_of_chars])

Key
   string         The text string or string expression.

 start_position   The start character in the string.
                  The first character is 1.

 number_of_chars  The number of characters to extract.
                  default= all characters after start_position.

The Mid() function can be used in VBA or in an SQL query.

Mid() will return a Variant, Mid$() will return a String.
You should use Mid() if there is any chance of a Null value, since assigning Null to a String will raise an error.

Use the MidB function with byte data contained in a string. Instead of specifying the number of characters to return, length specifies the number of bytes.

Examples

Dim strDemo as String
strDemo = Mid("The world is everlasting",5,5)
Returns "world"

“Love's dominion, like a king's, admits of no partition” ~ Ovid

Related:

Left - Extract a substring from a string
Right - Extract a substring from a string