12/24 Hour Converter — AM/PM and Military Time

Date & Time

A 12/24 hour converter changes time between AM/PM notation and 00:00 to 23:59 notation.

12/24 Hour Converter

Runs in this browserHH:MMCurrent tab only

12-hour input uses 1:00-12:59 plus AM/PM. 24-hour input uses 00:00-23:59, and input is not sent to a server.

Presets

Time

Input format

AM/PM

24-hour time

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What is it

24-hour time is commonly used for schedules, tickets, logs, and technical documents because it reduces ambiguity. This tool displays both the 12-hour and 24-hour forms immediately in your browser.

PM hour except 12 = hour + 12, 12 AM = 00

How to use

1Enter the time.
2Choose the input format.
3Press convert to see 12-hour and 24-hour notation.

Reference

12/24 Hour Converter — AM/PM and Military Time Reference
Input	24-hour
3:30 PM	15:30
12:05 AM	00:05

Sources & standards

ECMAScript Language Specification - Ecma International

FAQ

Can I enter 24:00?

No. This tool uses time within a day, from 00:00 through 23:59.

Is 12/24 hour converter input sent to a server?

No. This tool runs in your browser and does not send input to a server.