About This Site

This site does one thing: it converts between military (24-hour) time and the 12-hour AM/PM clock, in both directions, with the spoken form included. It exists because most conversion pages online are either a static chart with no tool, a tool with no explanation, or a wall of filler text wrapped around both. This one aims to be the version you would actually bookmark.

It is built and maintained by an independent developer who makes small, focused web tools. It is not affiliated with any armed service, and nothing here is official military guidance.

The conventions this site follows

• Conversion: hours 00–11 are AM, 1200 is noon, hours 13–23 are PM after subtracting 12, and 0000 is midnight starting a day. These are arithmetic facts of the 24-hour clock, not opinions.
• 2400: treated as an end-of-day marker equal in wall-clock position to 0000 of the next day. Style guides differ on when to use it (and the current ISO 8601 revision dropped 24:00 entirely), so the site explains the usage rather than pretending one rule is universal.
• Spoken forms: the widely taught conversational convention — “hundred” on the hour, plain minutes otherwise, leading zeros voiced (“zero four hundred”). Where real-world practice differs, such as digit-by-digit reading on aviation radio, the pages say so instead of flattening the difference.

Accuracy principles

• No invented facts. Statements about how services, hospitals or airlines use time are kept general and hedged where practice genuinely varies.
• Edge cases are documented, not hidden. Midnight (0000 vs 2400), noon, and one-digit minutes each get explicit treatment in the tool and the text.
• One tested library. Every table on every page and the interactive converter run on the same conversion code, which has an automated test suite covering the edge cases. A chart cell and the tool can never disagree.
• Corrections are welcome. If any conversion, spoken form or usage note is wrong, tell us via the contact page and it gets fixed.

Your data

The converter runs entirely in your browser. Times you type, and the live clock reading taken from your device, are never transmitted anywhere — there is no server-side processing at all. Details are in the privacy policy.