Google knows more about you than you might think. Here's how to keep it from tracking your location, web browsing, and more.

Google now allows you to automatically delete search history and activity from other Google services after a set period of time. Here's how to do it.

Try: A5: =(A3 24) A4
Note time is stored in Google Docs spreadsheets as a fraction between 0 and 1, e.g. 12:00:00 equals 0.5. By multiplying this fraction by 24 you get the time in hours (with minutes and seconds as a decimal fraction of the hour)