In Google Sheets, you have to format the cells correctly to calculate time. If you know how to format the cells, you can easily add and subtract time in Google Sheets.

New to Google Sheets? This guide walks you through the basics of how to use Google Sheets, from creating a new sheet to entering and formatting data.

Use either keyboard shortcuts or the NOW and TODAY functions to display the current date and time in Excel and Google Sheets spreadsheets together.

You can use SUMIF in Google Sheets to add numbers together that are associated with a date range, specific text, or meet a numeric criterion.