Select the cell or text you want to format
Press Ctrl+1 to open Format Cells
Go to the Font tab
Check Subscript or Superscript
Click OK
For part of a cell’s text, double-click the cell or press F2
Highlight the specific characters
Open Format Cells with Ctrl+1
Check Subscript or Superscript
Click OK
Use Unicode characters for common subscript or superscript symbols
Insert symbols from the Insert tab if needed
Use formulas or text functions if you need to combine formatted text with values