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Convertisseur 12h en 24h

Convertissez les horaires du format 12 heures AM/PM au format standard 24 heures.

12-hour → 24-hour

Accepts 2:30 PM, 02:30 pm, 12:00 AM, noon and midnight.

Common conversions

12-hour24-hourMilitary
12:00 AM (midnight)00:000000
1:00 AM01:000100
6:30 AM06:300630
11:59 AM11:591159
12:00 PM (noon)12:001200
2:30 PM14:301430
6:00 PM18:001800
11:59 PM23:592359

Comment ça marche

  1. The 12-hour clock repeats 1–12 twice a day with AM (before midday) and PM (after); the 24-hour clock runs 0–23 once. Converting is an hour remap; minutes and seconds pass through unchanged.
  2. Midnight is the special case: 12:00 AM becomes 00:00, and noon 12:00 PM stays 12:00. These two cases cause most off-by-twelve errors and are handled explicitly here.
  3. Anything with an AM/PM marker (or the words noon / midnight) is parsed strictly; invalid input like 0:30 PM is rejected with an explanation instead of a guess.

Bon à savoir

  • Hours on the 12-hour clock run 1–12: 0:30 AM is not a valid time, and the tool says so rather than assuming you meant 12:30 AM.
  • The military (four-digit) form is shown alongside: 2:30 PM is 14:30 and 1430.
  • This tool converts format only. For zone-aware instants, use the time zone converter.
Convertisseurs d’heure

Convertisseur 24h en 12h

Passez du format 24 heures au format 12 heures avec suffixes AM et PM.

Ouvrir l’outil
Convertisseurs d’heure

Convertisseur d’heure militaire

Convertissez entre heure militaire à 4 chiffres, notation 12h et 24h.

Ouvrir l’outil
Convertisseurs d’heureEn vedette

Heure UTC actuelle

Consultez l’heure officielle en temps universel coordonné (UTC) en direct.

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Foire aux questions

What is 12:00 AM in 24-hour time?
00:00. Midnight starts the day, so 12 AM becomes hour zero. Conversely 12:00 PM (noon) stays 12:00. These two cases are the most common source of off-by-twelve errors and are handled explicitly.
What happens to minutes?
Minutes pass through unchanged; only the hour and meridiem determine the 24-hour value. Both 2:30 PM and 2:45 PM map to hour 14.
Is 0:30 AM valid input?
No: on a 12-hour clock hours run 1–12. The tool rejects it and explains the range, instead of guessing that you meant 12:30 AM.