How long is 240 frames at 24 fps?
10.000 seconds
240 frames at 24 fps runs for 10.000 seconds. Counting from frame 0, the last frame is number 239 at timecode 00:00:09:23.
How that is worked out
seconds = frames ÷ fps
240 ÷ 24 = 10.000 seconds
Worth knowing
- In milliseconds that is 10,000.0 ms, since one frame at 24 fps lasts 41.667 ms.
- Halving and doubling the count does the same to the running time: 120 frames is 5.000 s and 480 frames is 20.000 s.
- An NLE shows the out point one frame past the last frame, so a 240 frame clip starting at 00:00:00:00 ends on 00:00:09:23 and its out point reads 00:00:10:00.
- The same 240 frames at 23.976 fps run 10.010 seconds — 0.010 seconds longer, which is the 1000/1001 pulldown and the reason a mixed-rate conform drifts.
240 frames at every standard frame rate
| Frame rate | Duration | Ends on | Frame duration |
|---|---|---|---|
| 23.976 fps | 10.010 s | 00:00:09:23 | 41.708 ms |
| 24 fps — this page | 10.000 s | 00:00:09:23 | 41.667 ms |
| 25 fps | 9.600 s | 00:00:09:14 | 40 ms |
| 29.97 fps | 8.008 s | 00:00:07:29 | 33.367 ms |
| 30 fps | 8.000 s | 00:00:07:29 | 33.333 ms |
| 50 fps | 4.800 s | 00:00:04:39 | 20 ms |
| 59.94 fps | 4.004 s | 00:00:03:59 | 16.683 ms |
| 60 fps | 4.000 s | 00:00:03:59 | 16.667 ms |
Timecode at an NTSC rate counts the labels of its integer neighbour, so 23.976 and 24 end on the same label — the NTSC version simply takes 1.001 times as long to get there.
Nearby frame counts at 24 fps
| Frame count | Duration | Ends on |
|---|---|---|
| 60 frames | 2.500 s | 00:00:02:11 |
| 100 frames | 4.167 s | 00:00:04:03 |
| 120 frames | 5.000 s | 00:00:04:23 |
| 240 frames — this page | 10.000 s | 00:00:09:23 |
| 300 frames | 12.500 s | 00:00:12:11 |
| 500 frames | 20.833 s | 00:00:20:19 |
| 600 frames | 25.000 s | 00:00:24:23 |
Need it for other values?
Turn a frame count into hours, minutes, seconds and frames, plus the real duration in milliseconds.