15:00 in 24-hour time is 3:00 PM.
To convert 15:00 to 12-hour format, subtract 12 from the hour: 15 − 12 = 3. Since 15:00 is past noon, it is PM. The result is 3:00 PM. This same rule applies to any hour from 13:00 to 23:00 — subtract 12 to get the 12-hour equivalent.
15:00 is the traditional end of the school day in many countries, and is also associated with afternoon tea in the UK — a custom so established that "3 o'clock tea" is still widely recognised. In 24-hour time, 15:00 appears frequently on public transport schedules, sports fixtures, and event programmes across Europe and Asia.
Enter any hour below to convert it, or use the quickpicks to jump to a nearby time.
Common afternoon times:
| Format | Result |
|---|---|
| 12-hour AM/PM | 3:00 PM |
| Military time | 1500 |
| 24-hour | 12-hour AM/PM |
|---|---|
| 12:00 | 12:00 PM (noon) |
| 13:00 | 1:00 PM |
| 14:00 | 2:00 PM |
| 15:00 | 3:00 PM |
| 16:00 | 4:00 PM |
| 17:00 | 5:00 PM |
| 18:00 | 6:00 PM |
| 19:00 | 7:00 PM |
| 20:00 | 8:00 PM |
| 21:00 | 9:00 PM |
| 22:00 | 10:00 PM |
| 23:00 | 11:00 PM |
15:00 in 24-hour time is 3:00 PM. To convert, subtract 12 from the hour: 15 − 12 = 3. Since 15:00 is past noon, the result is 3:00 PM. The minutes stay the same — so 15:30 is 3:30 PM, and 15:45 is 3:45 PM.
Subtract 12 from the hour: 15 − 12 = 3. The result is 3:00 PM. This rule applies to all hours from 13:00 to 23:00. For 12:00, no subtraction is needed — it stays as 12:00 PM. For hours from 00:00 to 11:59, the period is AM.
15:00 is PM. In the 24-hour system, 00:00 to 11:59 corresponds to AM, and 12:00 to 23:59 corresponds to PM. Since 15 is greater than 12, it is in the PM half of the day — specifically 3:00 PM.
3:00 PM in 24-hour format is 15:00. To convert any PM time to 24-hour format, add 12 to the hour — except 12:00 PM, which stays as 12:00. For example, 3 PM + 12 = 15:00, 6 PM + 12 = 18:00, and 11 PM + 12 = 23:00.