Slow Motion Duration Calculator
Find clip length when captured frames play at a different rate.
Your inputs
Calculation results
Formula & assumptions
Playback duration = capture duration × capture FPS/playback FPS.
Values use the specified units. Calculations use floating-point arithmetic. Check input measurements and formula assumptions before applying the result.
Compare your scenarios
Save up to five results to compare changes side by side. Scenarios stay in this tab until you clear or reload it.
Using Slow Motion Duration Calculator
Find clip length when captured frames play at a different rate.
- Enter capture rate, playback rate, capture duration using the units printed under each field.
- Choose Calculate, or enable live updates. Review the result labels and formula assumptions.
- Save scenarios to compare up to five variations, then copy the report or download JSON or CSV.
Example
Capture rate: 120 frames per second Playback rate: 30 frames per second Capture duration: 10 seconds Playback duration · seconds: 40 Duration multiplier: 4 Playback speed · percent: 25
Questions & answers
What does Slow Motion Duration Calculator calculate?
Find clip length when captured frames play at a different rate.
Which units should I enter?
Capture rate uses frames per second. Playback rate uses frames per second. Capture duration uses seconds. Convert values to these units before calculating.
Which formula does it use?
Playback duration = capture duration × capture FPS/playback FPS.
What does the included example show?
Capture rate: 120 frames per second; Playback rate: 30 frames per second; Capture duration: 10 seconds. Result: Playback duration · seconds = 40; Duration multiplier = 4; Playback speed · percent = 25.
Can I compare different settings?
Yes. Save a scenario, change the inputs and save another result. Up to five scenarios are compared in this tab; they disappear when you reload or leave.
Can I export the calculation?
Copy the JSON report or download JSON and CSV with inputs, result labels and numeric values. Processing uses local JavaScript; no calculation request is sent to our server. Displayed values use up to 10 significant digits; exports retain JavaScript numeric precision.
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