How to use the military time calculator
This military time calculator converts between 12-hour time (AM/PM) and 24-hour time (military time). Choose the conversion direction: 12-hour to military, or military to 12-hour. Then enter the time: for 12-hour mode use hour (1–12), minute (0–59), and AM/PM; for military mode use hour (0–23) and minute (0–59). Click "Convert" to see the result and a short explanation. Midnight is 00:00 in military time; noon is 12:00. Afternoon and evening hours add 12 in military form (1:00 PM = 13:00, 11:59 PM = 23:59).
Military time (24-hour time) is used by the military, aviation, healthcare, public transport, and many countries worldwide. It avoids confusion between morning and afternoon—there is no need for AM/PM. Converting is straightforward: 12:00 AM = 00:00, 1:00 AM–11:59 AM stay as 01:00–11:59, 12:00 PM = 12:00, and 1:00 PM–11:59 PM become 13:00–23:59. This calculator handles both directions and shows the conversion so you can check your work or learn the system.
The calculator runs entirely in your browser. There is no sign-up, no download, and no delay. It is designed to be mobile-friendly: the two-column layout stacks on small screens, and the inputs are easy to use. Use it for scheduling, travel, or any situation where you need to switch between 12-hour and 24-hour time quickly.
Bookmark this page for quick access whenever you need to convert between 12-hour and military time. This free military time calculator provides fast, clear results on any device.