Time
12-hour to 24-hour
Convert 12-hour to 24-hour instantly.
12-hour format
:
24-hour format
12:00
12:00 PM = 12:00
Reference table
12-hour
24-hour
Note
12:00 AM
00:00
Midnight
1:00 AM
01:00
6:00 AM
06:00
Morning
9:00 AM
09:00
12:00 PM
12:00
Noon
1:00 PM
13:00
6:00 PM
18:00
Evening
9:00 PM
21:00
11:59 PM
23:59
Before midnight
About this conversion
Convert times from 12-hour (AM/PM) format to 24-hour format. Useful for decoding US and UK time notations where 12:00 AM means midnight and 12:00 PM means noon.
How to use
Select the hours and minutes, then choose AM or PM. The result in 24-hour format is shown instantly below.
Frequently asked questions
What is 12:00 AM in 24-hour format?
12:00 AM is midnight — that is 00:00 in 24-hour format.
What is 12:00 PM in 24-hour format?
12:00 PM is noon — that is 12:00 in 24-hour format.
When is the 12-hour format used?
The 12-hour AM/PM format is primarily used in the US, Canada, Australia and other English-speaking countries. Most of Europe, including Denmark, uses the 24-hour clock.