Time Format Converter
Convert between 12-hour (AM/PM) and 24-hour time formats — batch, one per line.
12-hour vs 24-hour time formats
The 12-hour format uses AM (ante meridiem) and PM (post meridiem). Noon is 12:00 PM and midnight is 12:00 AM — a common source of confusion. The 24-hour format (used in aviation, healthcare, military) runs 00:00–23:59: noon is 12:00, midnight is 00:00. This tool converts either direction and handles optional seconds (HH:MM:SS).
Private & free — this tool runs entirely in your browser.
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