Change Case for Excel - Version 2.12 Quickly and easily convert text between upper, lower, and proper case with this Microsoft Excel add-on tool. Simply select the text and then select the desired case from the menu bar. In just a matter of seconds Change Case will convert the text to the case you selected. Download the free trial and give it a try. The trial version of Change Case contains nag screens and is limited to changing the text of up to ten cells at a time. If you would like a registered version the cost is $9.95 USD.