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Military time counts the day from 0000 (midnight) to 2359. For any time from 1 PM on, subtract 12 from the hour to get standard time: 1430 is 2:30 PM, 1715 is 5:15 PM. Before 1 PM the hours match, except 0000 to 0059, which is the 12 AM hour (0030 is 12:30 AM). Print the chart below and keep it with the time cards.
Every hour of the day in standard and 24-hour time.
| Standard (AM) | Military | Standard (PM) | Military |
|---|---|---|---|
| 12:00 AM | 0000 | 12:00 PM | 1200 |
| 1:00 AM | 0100 | 1:00 PM | 1300 |
| 2:00 AM | 0200 | 2:00 PM | 1400 |
| 3:00 AM | 0300 | 3:00 PM | 1500 |
| 4:00 AM | 0400 | 4:00 PM | 1600 |
| 5:00 AM | 0500 | 5:00 PM | 1700 |
| 6:00 AM | 0600 | 6:00 PM | 1800 |
| 7:00 AM | 0700 | 7:00 PM | 1900 |
| 8:00 AM | 0800 | 8:00 PM | 2000 |
| 9:00 AM | 0900 | 9:00 PM | 2100 |
| 10:00 AM | 1000 | 10:00 PM | 2200 |
| 11:00 AM | 1100 | 11:00 PM | 2300 |
Minutes don't change. The minutes are the same in both formats, so you just convert the hour:
| :00 | :05 | :10 | :15 | :20 | :25 | :30 | :35 | :40 | :45 | :50 | :55 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0700 = 7:00 AM | 0705 = 7:05 AM | 0710 = 7:10 AM | 0715 = 7:15 AM | 0720 = 7:20 AM | 0725 = 7:25 AM | 0730 = 7:30 AM | 0735 = 7:35 AM | 0740 = 7:40 AM | 0745 = 7:45 AM | 0750 = 7:50 AM | 0755 = 7:55 AM |
| 1500 = 3:00 PM | 1505 = 3:05 PM | 1510 = 3:10 PM | 1515 = 3:15 PM | 1520 = 3:20 PM | 1525 = 3:25 PM | 1530 = 3:30 PM | 1535 = 3:35 PM | 1540 = 3:40 PM | 1545 = 3:45 PM | 1550 = 3:50 PM | 1555 = 3:55 PM |
About midnight: 0000 is the start of the day. Some systems print 2400 for the very end of the day. Same moment, different label.
Add 12 to any PM hour, except 12 PM, which stays 12. 3:30 PM is 1530. For 12 AM, the hour becomes 00, so 12:45 AM is 0045. Morning hours from 1 AM to 11 AM just get a leading zero: 6:45 AM is 0645.
Here's a made-up crew day off a punch-clock card:
| In | Out | On the clock | 30-minute unpaid lunch (on paper) | Hours | Decimal |
|---|---|---|---|---|---|
| 0645 | 1530 | 8 h 45 min | minus 30 min | 8 h 15 min | 8.25 |
Subtract in from out: 1530 minus 0645. Borrow an hour since 30 is less than 45: 14 hours 90 minutes minus 6 hours 45 minutes is 8 hours 45 minutes. Take out the half hour for lunch and that's 8 hours 15 minutes, or 8.25 hours. Use the chart that converts minutes to decimal hours for the last step.
Overnight shift? If the out time is smaller than the in time, add 24 hours to the out time first. In 2200, out 0630: 0630 becomes 3030, and 3030 minus 2200 is 8 hours 30 minutes.
No AM and PM mix-ups. A smudged "7" on a card could be morning or night. 0700 and 1900 can't be confused. That's the whole reason, and it's a good one when you're squinting at a stack of cards on a Friday.
Download the one-page chart (PDF). It prints on one letter-size sheet: the 24-hour chart, the minutes strip, and the conversion rule. The Excel version has the same table plus a simple in and out sheet that works out the hours for you.
Need the card itself? Grab the construction timesheet template. Or see all guides and templates.
On My Guys Time each guy joins his crew's team from his own phone, he or the foreman logs his hours, the foreman approves the week, and the office sees weekly hours, hours past 40, and a simple gross pay estimate. $12/month flat for the whole company.
1700 is 5:00 PM.
0000 starts the day. Some clocks show 2400 at the end of the day. Time cards usually use 0000.
For hours 13 to 23, subtract 12 and add PM. 12xx is PM. 00xx is the 12 AM hour. Minutes stay the same.
Subtract in from out, borrowing 60 minutes if you need to, take out any unpaid lunch, then convert the minutes to decimal. See the minutes to decimal chart.
Yes. The PDF and Excel files are free to download, no signup.