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Military Time Conversion Chart: Printable 12-Hour to 24-Hour Reference

Military time looks like a secret code until you see the pattern — then it is simpler than the 12-hour clock. The confusion costs real people real time: travelers who show up at 18:00 instead of 6 PM, nurses who chart 3 AM instead of 3 PM, new recruits who freeze on their first duty roster. The mistakes always come from the same two spots: midnight, which is 0000, and the PM hours, where you must add 12 to convert. The spoken forms add another layer — 'zero six hundred' for 0600, but plain 'ten hundred' for 1000 once you pass 0900. This printable conversion chart gives you the mapping at a glance: each hour with its 24-hour military time, how to say it out loud, and the quick rule that makes every row obvious. Consult the live reference table below, or print the sheet below and tape it where you clock in.

Quick-Reference Table

The full data from this cheat sheet, right on the page.

12-Hour Time24-Hour TimeSpoken / PronouncedQuick Rule
12:00 AM (Midnight)0000Zero Hundred HoursMidnight is 0000 — the day starts at zero
1:00 AM0100Zero One HundredAM hours: same number, pad with a leading zero
2:00 AM0200Zero Two HundredSay the leading zero for hours 00–09
3:00 AM0300Zero Three HundredSame pattern holds through 9:00 AM
4:00 AM0400Zero Four HundredNothing to add — AM stays the same
5:00 AM0500Zero Five HundredNothing to add — AM stays the same
6:00 AM0600Zero Six HundredNothing to add — AM stays the same
7:00 AM0700Zero Seven HundredNothing to add — AM stays the same
8:00 AM0800Zero Eight HundredNothing to add — AM stays the same
9:00 AM0900Zero Nine HundredNothing to add — AM stays the same
10:00 AM1000Ten HundredDrop the 'zero' once the hour hits 10
11:00 AM1100Eleven HundredDrop the 'zero' once the hour hits 10
12:00 PM (Noon)1200Twelve HundredNoon is 1200 — PM conversion starts here
3:00 PM1500Fifteen HundredPM hours: add 12 (3 + 12 = 15)
9:00 PM2100Twenty-One HundredPM hours: add 12 (9 + 12 = 21)

How to Use This Chart

Pin this chart where you work: it packs 15 entries and 4 columns (12-Hour Time, 24-Hour Time, Spoken / Pronounced, Quick Rule) into one printable page, built for quick lookups.

Scan down the 12-Hour Time column to your item, then read across for 24-Hour Time, Spoken / Pronounced, Quick Rule.

Example: for 12:00 AM (Midnight), the chart gives 24-Hour Time of 0000.

  • Compare values down a single column to spot the pattern before you commit to a choice.
  • When two rows look close, the last column usually breaks the tie.
  • Print it once and keep it where you work — that's the whole point of a cheat sheet.

💡 Quick Tips

Add 12 for PM: For any PM hour except noon, add 12: 7 PM becomes 1900. Reverse it to convert back.

Midnight Is Zero: 00:00 is midnight — never write 24:00, which belongs to the end of the day.

Minutes Stay Put: Conversion only changes the hour: 4:45 PM becomes 1645, minutes untouched.

Frequently Asked Questions

How do you convert PM times to military time?

Add 12 to the hour for every PM time except 12 PM itself. So 1 PM is 1300, 6 PM is 1800, and 11 PM is 2300. AM hours stay the same number (with a leading zero), midnight is 0000, and noon stays 1200.

How do you say 0000 and 1000 out loud?

Military convention says 'zero hundred hours' for 0000 and 'ten hundred hours' for 1000. The 'zero' prefix applies to hours 0000–0900; from 1000 onward, you just say the number plus 'hundred hours.'

Why do militaries and hospitals use 24-hour time?

It removes the AM/PM ambiguity that causes real errors — a medication logged at '3' could mean morning or afternoon. One 24-hour number means one unambiguous time, which is why aviation, medicine, and emergency services all use it.

Printable Sheet Preview

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Printable military time chart showing 12-hour times, 24-hour equivalents, spoken pronunciations, and conversion rules.
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Download Your Free Printable Sheet

Download the printable PDF below. It is the same sheet shown in the preview above, ready to print on US Letter or A4 — open it and choose Print, with Scale set to Fit to Page.

💡 Pro Printing Tip: In your printer settings, set Scale to “Fit to Printable Area” and enable “Background Graphics” for color headers.