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Calcimator

Frame Rate Converter Calculator

Convert between frame rates and understand the effects on speed, duration, and frame interpolation requirements.

Inputs

fps
fps
sec

Results

Playback Speed

40%

New Duration

150 sec

Speed Effect2.5x slow motion
Source Total Frames3,600
Target Total Frames3,600
Frame Interpolation NeededNo
Interpolation DetailsNo interpolation needed — frames are dropped or used as-is.
Source Frame Interval16.67 ms
Target Frame Interval41.67 ms
How to Use This Calculator
  1. Enter Source Frame Rate, Target Frame Rate, and Source Duration.
  2. Review Playback Speed (%) and New Duration (sec).
  3. Use Speed Effect and Source Total Frames to inform your decision.

How the result changes with Source Frame Rate

Source Frame RatePlayback SpeedNew Duration
10123.76%252.5 sec
3516.84%877.5 sec
6503.69%1,625 sec
9002.67%2,250 sec

What each input means

Source Frame Rate
The original frame rate of the footage.
Target Frame Rate
The desired output frame rate.
Source Duration
Length of the source clip in seconds.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    Source Frame Rate = 60, Target Frame Rate = 24, Source Duration = 60 = 3 input(s) provided
  2. Calculate Playback Speed
    Playback Speed
    40 = 40
  3. Calculate New Duration
    New Duration
    150 = 150
  4. Calculate Speed Effect
    2.5x slow motion = 2.5x slow motion
  5. Calculate Source Total Frames
    Source Total Frames
    3600 = 3600

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