If you need to convert comma to dot in your Excel data, you can use the Find and Replace feature. Here are the steps:

1. Select the range of cells that contain the data you want to convert.
2. Press Ctrl+H on your keyboard to open the Find and Replace dialog box.
3. In the Find what field, type a comma (
   Code:

   ,

   ).
4. In the Replace with field, type a dot (
   Code:

   .

   ).
5. Click on the Options button to expand the dialog box.
6. Make sure the Within: option is set to Sheet or Workbook, depending on your needs.
7. Check the Match entire cell contents box to ensure that only cells with commas are replaced.
8. Click on the Replace All button to replace all commas with dots in the selected range.

That's it! Your data should now be converted from comma to dot. Keep in mind that this will replace all commas in the selected range, so make sure to double-check your data before proceeding.