1. Put the number 1 into a cell
2. Right click - Copy
3. Select the range with the hyperlinks in it (you may have to start one row above or below the range in order to be able to select without activating a link)
4. Right click - Paste Special...
5. Check the "multiply" option in the Operation section
6. Click OK
This "multiples" the values by 1, which converts them back to plain text.
Regards,
Mike