You can change the date & time format in Google Sheets & Excel Online using this guide. Use different date & time formats in spreadsheets.

Open the Excel 2010 file that you want to make format changes to. Select the top-left cell in the range of cells that you want to change to the accounting format.

When you type a seven-or-ten-digit phone number into an Excel cell that uses the phone number format, Excel will automatically change the way the number looks so that it appears as a phone number ...

Tables can be really handy when trying to organize information in Excel or Google Sheets, but if you need to get rid of the formatting, here's how to do it.

The default active cell format in Microsoft Excel isn't all that easy to see, but you can use this easy-to-implement code solution to change that.

You may have used Excel for years without delving into Styles (or stylesheets). We’re going to cover Cell Styles, and Smart Art, Drawing, Graphics, Picture, and Chart Tools.