How do you Change a text from lower to upper case?

To change text from lower case to upper case, you can use various methods depending on the application. In Word processors like Microsoft Word, you can highlight the text and use the "Change Case" feature (often found under the Format menu or as a shortcut like Shift + F3). In programming languages like Python, you can use the .upper() method on a string. For online tools, simply paste the text into a case converter and select the option to convert to upper case.