24 Hour Clock Conversion Worksheets - Free Printable

Let’s solve this step by step.

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Part 1: Convert 12-hour times to 24-hour times

Rules for conversion:
- For am times:
- If it’s 12:xx am, change to 00:xx
- Otherwise, keep the same hour (but write with leading zero if needed) → e.g., 7:20am = 07:20
- For pm times:
- If it’s 12:xx pm, keep as 12:xx
- Otherwise, add 12 to the hour → e.g., 3:25pm = 15:25

Now let’s fill in each row:

Left column (am times):

1. 3:25am → already done: 03:25
2. 7:20am → 07:20
3. 8:05am → 08:05
4. 12:20am → 00:20 (because 12am is midnight)
5. 1:16am → 01:16
6. 4:56am → 04:56
7. 10:42am → 10:42
8. 12:51am → 00:51

Right column (pm times):

1. 3:25pm → 3 + 12 = 15:25
2. 7:20pm → 7 + 12 = 19:20
3. 8:05pm → 8 + 12 = 20:05
4. 12:20pm → stays 12:20 (noon)
5. 1:16pm → 1 + 12 = 13:16
6. 4:56pm → 4 + 12 = 16:56
7. 10:42pm → 10 + 12 = 22:42
8. 12:51pm → stays 12:51

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Part 2: Read clock faces and convert to 24-hour time

We read the hour hand (shorter) and minute hand (longer). Then apply am/pm rule.

Top row (all labeled “am”):

Clock 1 (top left):
- Hour hand between 2 and 3 → 2 o’clock
- Minute hand on 8 → 8 × 5 = 40 minutes
- So: 2:40am → 02:40

Clock 2 (top middle):
- Hour hand near 9 (just before), minute hand on 11 → 55 minutes
- So: 8:55am? Wait — hour hand is closer to 9? Let’s check:
Actually, hour hand is just before 9, so it’s 8:something.
Minute hand on 11 → 55 min → 8:55am → 08:55

Wait — correction: The hour hand is pointing almost at 9, but since it’s am and not yet 9, it’s 8:55am → yes, 08:55

Clock 3 (top right):
- Hour hand halfway between 3 and 4 → 3:30
- Minute hand on 6 → 30 min
- So: 3:30am → 03:30

Bottom row (all labeled “pm”):

Clock 4 (bottom left):
- Same as top left but pm → 2:40pm → 2 + 12 = 14:40

Clock 5 (bottom middle):
- Same as top middle but pm → 8:55pm → 8 + 12 = 20:55

Clock 6 (bottom right):
- Same as top right but pm → 3:30pm → 3 + 12 = 15:30

Wait — double-check Clock 5: In the image, bottom middle clock — hour hand is near 9? Actually, looking again:

In the original problem’s clocks:

Top middle: hour hand is near 9, minute on 11 → that’s 8:55am → correct.

Bottom middle: same positions, but labeled pm → so 8:55pm → 20:55 → correct.

But wait — in the user’s image description (though we don’t describe it), from standard interpretation:

Actually, let me recheck based on common worksheet patterns:

Looking at the six clocks:

Top-left: hour between 2–3, minute on 8 → 2:40am → 02:40
Top-middle: hour near 9, minute on 11 → 8:55am → 08:55
Top-right: hour between 3–4, minute on 6 → 3:30am → 03:30

Bottom-left: same as top-left but pm → 2:40pm → 14:40
Bottom-middle: same as top-middle but pm → 8:55pm → 20:55
Bottom-right: same as top-right but pm → 3:30pm → 15:30

Yes, that matches.

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Final Answer:

Part 1:

Left Column (am):
- 7:20am → 07:20
- 8:05am → 08:05
- 12:20am → 00:20
- 1:16am → 01:16
- 4:56am → 04:56
- 10:42am → 10:42
- 12:51am → 00:51

Right Column (pm):
- 3:25pm → 15:25
- 7:20pm → 19:20
- 8:05pm → 20:05
- 12:20pm → 12:20
- 1:16pm → 13:16
- 4:56pm → 16:56
- 10:42pm → 22:42
- 12:51pm → 12:51

Part 2:

Top row (am):
- Clock 1: 02:40
- Clock 2: 08:55
- Clock 3: 03:30

Bottom row (pm):
- Clock 4: 14:40
- Clock 5: 20:55
- Clock 6: 15:30

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Final Answer:

Part 1 – Left Column (am):
07:20
08:05
00:20
01:16
04:56
10:42
00:51

Part 1 – Right Column (pm):
15:25
19:20
20:05
12:20
13:16
16:56
22:42
12:51

Part 2 – Clocks (top to bottom, left to right):
02:40
08:55
03:30
14:40
20:55
15:30