Numbers or punctuation characters inside a text string are unaffected: If a numeric value is given to UPPER, number formatting is removed. For example, if cell A1 contains the date June 26, 2021, date formatting will be lost and UPPER will return a date serial number as text: If necessary, you can use the TEXT function to workaround this limitation. Use TEXT to convert the number to a text value, then pass that value into UPPER:

Use the LOWER function to convert text to lowercase, use the UPPER function to convert text to uppercase, and use the PROPER function to capitalize the words in a text string.


All letters in text are converted to uppercase. Numbers and punctuation characters are not affected. Number formatting is removed from standalone numeric values.

Dave Bruns

Hi - I’m Dave Bruns, and I run Exceljet with my wife, Lisa. Our goal is to help you work faster in Excel. We create short videos, and clear examples of formulas, functions, pivot tables, conditional formatting, and charts.