🎬 Frame Rate Converter: Calculator

Solve for FPS, duration, or frame count, and convert clips between frame rates.

fps
sec
fps
FRAME COUNT
240 frames
10.00 sec at 24 fps
Frame Rate
24 fps
Duration
0:10
Frames at New FPS
300
New Frame Rate
30 fps
Frames = FPS × Duration (seconds)

How the Frame Rate Converter Calculator Works

Video is made of individual still frames displayed rapidly in sequence, and three values are always linked together: the frame rate (frames per second, or FPS), the clip's duration, and its total frame count. Knowing any two of these lets you solve for the third — use the "Solve For" buttons above to pick which value you want the calculator to compute from your other two inputs.

Total Frames = FPS × Duration (seconds)
FPS = Frames ÷ Duration
Duration = Frames ÷ FPS

Converting a Clip to a Different Frame Rate

The second section answers a different, very common editing question: "If I keep this clip's duration the same but change its frame rate, how many frames will it need?" Since duration in seconds stays fixed, the new frame count is simply Duration × New FPS — useful when conforming footage between standards like 24 fps (film), 30 fps (broadcast/NTSC), 25 fps (PAL), or 60 fps (smooth motion/gaming).

Why This Matters for Editors and Animators

Mixing frame rates within a project without accounting for the conversion can cause footage to play back too fast, too slow, or with dropped/duplicated frames. Animators planning keyframes also need to know exact frame counts for a given duration and frame rate to time actions precisely, and this calculator handles that math instantly for any of the three linked values.

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❓ Frequently Asked Questions

What's the difference between 24fps, 30fps, and 60fps?
These describe how many individual frames are captured or displayed per second. 24fps is the traditional cinematic film standard, 30fps (technically 29.97) is common in North American broadcast video, and 60fps captures smoother motion, often used for sports, gaming, and slow-motion source footage.
If I change a clip's frame rate, does its duration change too?
It depends on the method. A true frame rate conversion for playback purposes (conforming) typically keeps the duration the same and recalculates the frame count, as this calculator's 'convert to new frame rate' section shows. Simply relabeling a clip's frame rate without adding or removing frames, however, can change its playback duration.
How do I calculate how many frames are in a 30-second clip at 24fps?
Multiply frame rate by duration: 24 fps × 30 seconds = 720 total frames. You can enter these values directly into the 'Frame Count' mode of this calculator to get the same result instantly.
Why do some countries use 25fps/50fps and others use 30fps/60fps?
This traces back to old analog broadcast TV standards tied to regional electrical grid frequency — PAL regions (much of Europe, Asia) historically used 50Hz power and settled on 25fps/50fps, while NTSC regions (North America, Japan) used 60Hz power and settled on 29.97fps/59.94fps (commonly rounded to 30/60).
Can this calculator handle fractional frame rates like 23.976 or 29.97?
Yes, the frame rate, duration, and frame count fields all accept decimal values, so you can enter precise fractional frame rates like 23.976 fps or 29.97 fps commonly used in professional video production.

🏆 About This Tool — Accuracy & Trust

🔒 Data Privacy: All calculations run entirely within your browser using JavaScript. Nothing you enter here is ever transmitted to our servers, stored, sold, or shared.

📐 Accuracy Note: This tool uses standard, widely published formulas and guidelines. Results are estimates for informational purposes; for financial, medical, or engineering decisions, consult a licensed professional.

📅 Last Updated: September 2026.