Convert text to numbers in Excel

Objective:

The goal is to convert a text string that represents a number into an actual numeric value in an Excel cell. Sometimes numbers are stored as text, which can cause problems when performing calculations. We will solve this issue using VBA.

Example VBA Code:

Sub ConvertTextToNumber()
    ' Declare a variable to store the cell reference
    Dim cell As Range
    ' Loop through each cell in the selected range
    For Each cell In Selection
        ' Check if the cell contains text that can be converted to a number
        If IsNumeric(cell.Value) And IsEmpty(cell.Value) = False Then
            ' Convert the text representing a number into an actual number
            cell.Value = CDbl(cell.Value)
        End If
    Next cell
    ' Display a message when the conversion is complete
    MsgBox "Conversion complete!", vbInformation
End Sub

Code Explanation:

1. Declaring the cell variable:

Dim cell As Range

This line declares a variable cell to represent each cell in the selected range.

For Each loop:

For Each cell In Selection

This line starts a loop that will go through each cell in the active selection (the range of cells you have selected in Excel).

Checking the cell’s content:

If IsNumeric(cell.Value) And IsEmpty(cell.Value) = False Then
Here, we check two conditions:

1. • IsNumeric(cell.Value): This function checks if the content of the cell is a number (even if it is in text form).
   • IsEmpty(cell.Value) = False: This check ensures that the cell is not empty.

If both conditions are true, it means the cell contains a text string that represents a number.

Converting text to number:

cell.Value = CDbl(cell.Value)

CDbl is a function that converts the text to a numeric value (a double precision floating-point number). It is used here to convert the text representation of a number into an actual number.

End of the loop: The loop continues with the next cell in the selection until all cells have been processed.

Completion message:

MsgBox "Conversion complete!", vbInformation

After the process is finished, a message box appears to inform the user that the conversion is complete.

How to Use the Code:

1. Open Excel and press Alt + F11 to open the VBA editor.
2. In the VBA editor, click on Insert > Module to insert a new module.
3. Copy and paste the code above into the module.
4. Return to Excel, select the cells containing the text values that represent numbers.
5. Press Alt + F8, select ConvertTextToNumber from the list of macros, and click « Run ».

Possible Improvements:

• Error Handling: If a cell contains non-convertible text (like « Hello » or any other word), you can add error handling to prevent the code from crashing. For example:

On Error Resume Next
cell.Value = CDbl(cell.Value)
If Err.Number <> 0 Then
    MsgBox "Conversion error in cell " & cell.Address
End If
On Error GoTo 0

• Conditional Conversion: You could extend the logic to convert only specific types of text (e.g., numbers with certain formatting) or to skip cells containing dates or formulas.