12-Hour to 24-Hour Time Converter

Type a time in either format — “7:30 pm”, “19:30” or “1930” — and get the other.

Convert a time

Examples: 7:30 PM, 7pm, 19:30, 1930, 00:15

24-hour time19:30
12-hour time
7:30 PM
Period
Afternoon/evening (PM)

The rules

  • From 1:00 AM to 12:59 PM, the hour is the same (add a leading zero if needed): 9:05 AM → 09:05.
  • For 1:00 PM to 11:59 PM, add 12 to the hour: 7:30 PM → 19:30.
  • Midnight hour: 12:xx AM → 00:xx.
  • Noon hour: 12:xx PM stays 12:xx.

Worked example

Convert 7:30 PM

  1. It is PM and not 12, so add 12 to the hour
  2. 7 + 12 = 19

19:30.

Full chart

24-hour to 12-hour clock
24-hour12-hour
00:0012:00 AM
01:001:00 AM
02:002:00 AM
03:003:00 AM
04:004:00 AM
05:005:00 AM
06:006:00 AM
07:007:00 AM
08:008:00 AM
09:009:00 AM
10:0010:00 AM
11:0011:00 AM
12:0012:00 PM
13:001:00 PM
14:002:00 PM
15:003:00 PM
16:004:00 PM
17:005:00 PM
18:006:00 PM
19:007:00 PM
20:008:00 PM
21:009:00 PM
22:0010:00 PM
23:0011:00 PM

Midnight confusion

“12:00 AM” means midnight at the start of a day and “12:00 PM” means noon, but many people find these ambiguous. Timetables and contracts often write “00:00” or “12:00 midnight” and “12:00 noon”, and some avoid the issue by using 23:59 or 00:01.