What is 10:21 AM in 24-hour time?
👉 10:21 AM is 10:21 in 24-hour time and 1021 in military time
10:21 AM in every format
| 12-hour clock | 10:21 AM |
|---|---|
| 24-hour clock | 10:21 |
| Military time | 1021 hours |
| Military pronunciation | ten twenty-one hours |
| ISO 8601 | T10:21:00 |
| In words | Twenty-one minutes past ten |
| Part of the day | Morning |
| Minutes since midnight | 621 |
| Day progress | 43.12% |
How to convert 10:21 AM to 24-hour time
For AM times keep the hour (12 AM becomes 00): 10:21 AM → 10:21.
The 10 AM hour is mid-morning: the working day is well under way and many people take a short break or a second coffee.
12-hour to 24-hour chart for 10 AM
| 12-hour | 24-hour | Military |
|---|---|---|
| 10:00 AM | 10:00 | 1000 |
| 10:05 AM | 10:05 | 1005 |
| 10:10 AM | 10:10 | 1010 |
| 10:15 AM | 10:15 | 1015 |
| 10:20 AM | 10:20 | 1020 |
| 10:25 AM | 10:25 | 1025 |
| 10:30 AM | 10:30 | 1030 |
| 10:35 AM | 10:35 | 1035 |
| 10:40 AM | 10:40 | 1040 |
| 10:45 AM | 10:45 | 1045 |
| 10:50 AM | 10:50 | 1050 |
| 10:55 AM | 10:55 | 1055 |
Questions about What is 10:21 AM in 24-hour time?
What is 10:21 AM in 24-hour time?
10:21 AM is 10:21. For AM times keep the hour (12 AM becomes 00): 10:21 AM → 10:21.