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

In Microsoft Excel, learn how to report time values by the hour using the underlying date serial value.

Learn how to add a highlight to expose groups in your Microsoft Excel data using a helper column and Excel’s conditional formatting feature.

Hi everybody: I need to summarize phone calls in Excel to prove how many hours, mins and seconds I spent on the phone for something. I'm a very basic Excel user, so please spell it out for me. DAT ...