Frames To Seconds Converter
120 frames at 24 fps last exactly 5 seconds.
Quick answer: Divide the number of frames by the frame rate. For example, 120 frames at 24 fps is 5 s, 90 frames at 30 fps is 3 s and 300 frames at 60 fps is 5 s.
The frames to seconds formula
Seconds equal the number of frames divided by the frame rate in fps.
The last column shows how long one frame lasts.
Take 120 frames at 24 fps. 120 ÷ 24 gives 5 s.
Take 90 frames at 30 fps. 90 ÷ 30 gives 3 s.
Frames per second
Frame rate is the number of images captured or shown each second, in frames per second, or fps (Wistia: What is frame rate).
So dividing the frames by the frames per second gives the seconds.
How to convert frames to seconds step by step
- Read the number of frames.
- Read the frame rate in fps.
- Divide the frames by the frame rate.
- Read the length of one frame in ms in the last column.
Example 1: 120 frames at 24 fps
- Start with 120 frames at 24 fps.
- 120 ÷ 24 = 5.
- The duration is 5 s.
120 frames at 24 fps = 5 s
Example 2: 90 frames at 30 fps
- Start with 90 frames at 30 fps.
- 90 ÷ 30 = 3.
- The duration is 3 s.
90 frames at 30 fps = 3 s
Example 3: 300 frames at 60 fps
- Start with 300 frames at 60 fps.
- 300 ÷ 60 = 5.
- The duration is 5 s.
300 frames at 60 fps = 5 s
The three examples below use common sizes.
Each one shows the sum in full.
frames to seconds conversion table
| Frames and rate | Duration (seconds) | One frame (ms) |
|---|---|---|
| 1 frames at 24 fps | 0.0417 s | 41.667 ms per frame |
| 10 frames at 24 fps | 0.4167 s | 41.667 ms per frame |
| 24 frames at 24 fps | 1 s | 41.667 ms per frame |
| 48 frames at 24 fps | 2 s | 41.667 ms per frame |
| 72 frames at 24 fps | 3 s | 41.667 ms per frame |
| 120 frames at 24 fps | 5 s | 41.667 ms per frame |
| 240 frames at 24 fps | 10 s | 41.667 ms per frame |
| 30 frames at 30 fps | 1 s | 33.333 ms per frame |
| 90 frames at 30 fps | 3 s | 33.333 ms per frame |
| 600 frames at 30 fps | 20 s | 33.333 ms per frame |
| 300 frames at 60 fps | 5 s | 16.667 ms per frame |
| 720 frames at 60 fps | 12 s | 16.667 ms per frame |
The highlighted row is the default of the calculator. The last column gives ms per frame.
A quick mental shortcut for frames to seconds
At 24 fps, each second holds 24 frames. So 48 frames last 2 seconds.
Double the frames and the time doubles. Double the frame rate and the time halves.
Common frame rates
Twenty four fps is the cinema standard, 30 fps is common for live TV, and 60 fps and higher gives smoother motion and slow motion (Wistia: What is frame rate).
Broadcast TV often uses 29.97 and 59.94 fps, which sit just under 30 and 60 (Wistia: What is frame rate).
Worked examples
At 24 fps, 240 frames last 10 seconds. At 30 fps, 600 frames last 20 seconds.
At 60 fps, 300 frames last 5 seconds, and 720 frames last 12 seconds.
Length of one frame
One frame at 24 fps lasts about 41.67 ms. One frame at 30 fps lasts about 33.33 ms, and one frame at 60 fps lasts about 16.67 ms.
A higher frame rate means a shorter frame.
Fractional rates
At 29.97 fps, 150 frames last about 5.005 seconds, a little longer than at 30 fps.
The gap grows over a long clip, so use the true rate for long timings.
Editing use
Editors and animators think in frames, while clients ask for seconds. This sum links the two.
Always use the frame rate of the project, not the rate of the source clip.
Quick conversion answers
| Conversion | Result |
|---|---|
| 120 frames at 24 fps | 5 s |
| 90 frames at 30 fps | 3 s |
| 300 frames at 60 fps | 5 s |
| 48 frames at 24 fps | 2 s |
Where this conversion is used
Editors and animators turn frame counts into running time.
Students link frame rate to duration.
Common mistakes to avoid
- Using the wrong frame rate. Check the project settings.
- Rounding 29.97 to 30. It adds small errors on long clips.
- Multiplying instead of dividing. Divide the frames by fps.
- Mixing seconds with minutes. Divide by 60 for minutes.
Related converters
More frame counts
12 frames at 24 fps is 0.5 s. 36 frames at 24 fps is 1.5 s. 96 frames at 24 fps is 4 s.
144 frames at 24 fps is 6 s. 60 frames at 30 fps is 2 s. 150 frames at 30 fps is 5 s.
180 frames at 60 fps is 3 s. 450 frames at 60 fps is 7.5 s. 900 frames at 60 fps is 15 s.
Doubling the first number
24 frames at 24 fps is 1 s. 72 frames at 24 fps is 3 s. 192 frames at 24 fps is 8 s.
288 frames at 24 fps is 12 s. 120 frames at 30 fps is 4 s. 300 frames at 30 fps is 10 s.
360 frames at 60 fps is 6 s. 900 frames at 60 fps is 15 s. 1,800 frames at 60 fps is 30 s.
Frequently asked questions
How do I convert frames to seconds?
Divide the frames by the frame rate.
How long are 120 frames at 24 fps?
5 seconds.
How long are 90 frames at 30 fps?
3 seconds.
How long is one frame at 24 fps?
About 41.67 ms.
What is a common film frame rate?
24 fps.
Does 29.97 differ from 30?
Slightly, and the gap adds up on long clips.
Sources
- Wistia: What is frame rate (wistia.com)
