Convert between 24-hour (military) time and 12-hour (AM/PM) time formats instantly. Perfect for international communication, travel, and scheduling.
Conversion Rules:
Hours (0-23)
Minutes (0-59)
Example: 14:30 = 2:30 PM
Quick conversions - click to auto-fill:
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Two different systems for representing the time of day, each with distinct uses and conventions
Examples:
00:00 (midnight), 08:30, 12:45, 17:20, 23:59
Examples:
12:00 AM (midnight), 8:30 AM, 12:45 PM (noon), 5:20 PM, 11:59 PM
Common 24-hour to 12-hour time conversions for quick reference
| 24-Hour Time | = | 12-Hour Time | Common Reference |
|---|---|---|---|
| 00:00 | = | 12:00 AM | Midnight |
| 01:00 | = | 1:00 AM | Early morning |
| 06:00 | = | 6:00 AM | Early morning |
| 09:30 | = | 9:30 AM | Morning |
| 12:00 | = | 12:00 PM | Noon |
| 13:45 | = | 1:45 PM | Afternoon |
| 17:00 | = | 5:00 PM | Evening |
| 20:30 | = | 8:30 PM | Night |
| 23:59 | = | 11:59 PM | One minute before midnight |
Times are shown in HH:MM format. AM = Ante Meridiem (before noon), PM = Post Meridiem (after noon)
Common questions about 24-hour and 12-hour time conversions
The 24-hour format is often referred to as military time in countries that primarily use 12-hour time because military organizations worldwide adopted it to avoid confusion in communications. This precision is critical for operations, logistics, and coordination where even a small time misunderstanding could have serious consequences.
To convert from 12-hour to 24-hour time:
You can use the "Swap Direction" button in this converter to easily switch to 12-hour to 24-hour conversion.
The adoption of time formats is largely cultural and historical. Most countries switched to 24-hour time during the 20th century for official purposes due to its precision and lack of ambiguity. The United States, along with a few other countries, retained 12-hour time for everyday use, though 24-hour time is still used in military, aviation, and medical contexts.
Noon is 12 PM (Post Meridiem), as it occurs after the meridian (midday). Midnight is 12 AM (Ante Meridiem), as it occurs before the meridian. This can be confusing because 12 is the starting point rather than the end of the 12-hour cycle.
In 24-hour time, this confusion is eliminated: noon is 12:00 and midnight is 00:00.
In 24-hour time, leading zeros are standard practice for hours 0-9 (e.g., 08:05 instead of 8:5). This maintains consistency with a two-digit format. For minutes 0-9, leading zeros are also standard in both formats (e.g., 3:07 PM or 15:07).
In casual 12-hour time usage, leading zeros are often omitted for hours (e.g., 9:30 AM instead of 09:30 AM).
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