Welcome to OnlineConversion.com

12 hour to 24 hour Converter

Converting a 12-hour time to 24-hour time is straight forward, though confusing. From 1:00 PM to 11:59 PM you add 12 hours, and from 12:00 AM (midnight) to 12:59 AM you subtract 12 hours.

12 hour to 24 hour time chart

Or you can simply use the following calculator to convert to or from either system. Simply pick the hour (the minutes do not change) in either system and the other will change to match.

24-hour time   12-hour time
<-to or from->

The 24-hour clock is a time keeping convention where the day runs from midnight to midnight and is split into 24 hours, from hour 0 to hour 23. It is the most common system in use in the world, and is the international standard notation of time. (ISO 8601)

In the U.S. and Canada the 12-hour AM/PM format is still more commonly used. In these countries the 24-hour format is called 'Military time'.

BookMark Us

It may come in handy.

Are you bored?

Try the Fun Stuff

Was this site helpful?

Link to Us | Donate