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Frame Count Calculator

Enter clip duration and frame rate to get the total frame count.

How it is calculated

The tool multiplies the clip length by the frame rate and rounds to the nearest whole frame: frames = duration × fps, with duration in seconds and fps in frames per second. The length of one frame is frame time (ms) = 1000 ÷ fps, shown to three decimals. Fractional frame rates such as 29.97 or 23.976 are accepted, so the product is rarely a whole number and the rounding matters. Duration must be zero or more and fps must be above zero; otherwise no result is shown. Enter minutes and timecode parts as seconds first (1 min 30 s = 90).

Worked example

A 90-second clip at 29.97 fps. Frames: 90 × 29.97 = 2,697.3, which rounds to 2,697 frames. Frame time: 1000 ÷ 29.97 = 33.367 ms per frame. If you had assumed a flat 30 fps you would have counted 2,700 frames, three too many, enough to drift out of sync with audio over a long edit.

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Common mistakes

  • Entering the duration in minutes or as a timecode like 1:30 instead of seconds; 1.5 would give a clip of 1.5 seconds.
  • Typing 30 for NTSC footage that really runs at 29.97, which overstates the count by roughly 0.1 percent.
  • Treating the rounded frame count as exact when the duration times the rate is fractional; the true clip has a whole number of frames, so check your source length.
  • Using the field-based rate (59.94 fields) of interlaced video instead of the 29.97 frame rate.

About this calculator

Video is a sequence of still images displayed fast enough to appear as motion, and the total number of frames in a clip is simply duration × frame rate (fps) — a 10-second clip at 24 fps contains exactly 240 frames. The inverse, 1 ÷ fps, gives the exact duration each single frame occupies, which matters for frame-accurate trimming and syncing.

This calculator takes a clip's duration and frame rate and returns the total frame count along with the per-frame duration. Video editors and colorists use it to plan cuts down to the exact frame, animators use it to budget how many individual frames a shot requires to draw or render, and VFX and motion graphics artists use it when converting timecodes between different frame rates like 24, 25, 30, and 60 fps.

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Comments (1)

  • Editorial team

    For slow motion, divide the shooting rate by the playback rate. Footage shot at 120 fps and played at 24 fps runs five times slower, so a 2-second event is 240 frames, which fill 10 seconds on a 24 fps timeline. Use the tool with the shooting rate to get the frame count, then divide by the playback rate. Which frame rates do you juggle most, such as 23.976 or 59.94?

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