How do I convert 12 AM to 24-hour time?

12 AM (midnight) is 00:00 in 24-hour time. The converter automatically adjusts the hour to 0 when you select AM and hour 12.

What is 12 PM in 24-hour time?

12 PM (noon) is 12:00 in 24-hour time. The converter keeps the hour as 12 when you select PM and hour 12.

Can I convert from 24-hour time back to AM/PM?

Yes, the converter has a one-click swap feature. Enter a time in 24-hour format (HH:MM) and click swap to see the equivalent AM/PM time.

Datum & Zeit

Sofort, privat und kostenlos

12-Stunden- zu 24-Stunden-Zeitumrechner.

4. Aug. 2026

Konvertieren Sie zwischen 12-Stunden-AM/PM-Zeit und 24-Stunden-Militärzeit in beide Richtungen, wobei Mitternacht und Mittag korrekt behandelt werden.

Dieser Rechner ist noch nicht vollständig übersetzt – einige Texte werden auf Englisch angezeigt.

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02 / ANTWORT

12-Stunden → 24-Stunden

Stunde (1-12)

Minute (0–59)

Tageshälfte

24-Stunden-Zeit

00:00

Aufschlüsselung

Eingabe12:00 AM

So geht's

Die zwei Fälle, die oft falsch gemacht werden: 12:00 AM ist Mitternacht (00:00), nicht 12:00, und 12:00 PM ist Mittag (12:00). Für jede andere Stunde addiert PM 12 und AM bleibt gleich.

Cite this calculator

Canonical URL: https://mathify.one/de/date/time-format

Updated 4. Aug. 2026

Cite as: Mathify. (2026). 12-Stunden- zu 24-Stunden-Zeitumrechner. https://mathify.one/de/date/time-format

Use Cases

Scheduling Across Time Formats

Quickly convert times for travel, work shifts, or international meetings to avoid confusion between AM/PM and military time.

Example: Convert 3:45 PM to 15:45 for a flight itinerary.

Understanding Military Time

Learn how to read and write military time by converting familiar AM/PM times to 24-hour format.

Example: See that 8:30 AM becomes 08:30.

Frequently Asked Questions

How do I convert 12 AM to 24-hour time?: 12 AM (midnight) is 00:00 in 24-hour time. The converter automatically adjusts the hour to 0 when you select AM and hour 12.
What is 12 PM in 24-hour time?: 12 PM (noon) is 12:00 in 24-hour time. The converter keeps the hour as 12 when you select PM and hour 12.
Can I convert from 24-hour time back to AM/PM?: Yes, the converter has a one-click swap feature. Enter a time in 24-hour format (HH:MM) and click swap to see the equivalent AM/PM time.

Tips & Common Mistakes

Tips

Remember: 12 AM is 00:00, and 12 PM is 12:00. The converter handles these correctly.
For times from 1:00 AM to 12:59 PM, the hour stays the same in 24-hour format (e.g., 9:30 AM = 09:30).
For times from 1:00 PM to 11:59 PM, add 12 to the hour (e.g., 3:00 PM = 15:00).
Use the swap button to quickly toggle between formats and double-check your conversions.

Common Mistakes to Avoid

Assuming 12 AM is 12:00 in 24-hour time. It's actually 00:00.
Forgetting to add 12 to PM hours after 12 PM. For example, 1 PM is 13:00, not 01:00.
Entering minutes outside the 0-59 range. The converter expects valid minute values.

Last updated: August 13, 2026