Use this free aspect ratio calculator to convert width and height for YouTube, TikTok, Instagram Reels, cinema scope, or any custom video format in seconds.
Transparent picture area with colored bars for quick overlays.
See also: Field of View & Crop Factor Calculator
Calculate equivalent focal lengths, crop factors, and horizontal, vertical, or diagonal field of view for full-frame, Super 35, APS-C, Micro Four Thirds, or any custom sensor.
Full Frame is the standard reference; Super 35 is most common in cinema. Change reference to compare equivalents.
Convert high-frame-rate footage like 120fps, 240fps, or 60fps down to cinematic 24fps, 25fps, or 30fps, and instantly see slowdown percentage and remapped durations.
See also: Frames to Timecode Converter (23.976, 24, 25, 29.97)
Translate frame counts into SMPTE timecode or reverse the process for 23.976, 24, 25, 29.97 fps and more—ideal for conforming timelines for broadcast or streaming delivery.
See also: Slow Motion Calculator (FPS to % Speed, 120fps → 24fps)
Convert popular shutter angles—180°, 172.8°, 144°, and more—into exact shutter speeds for 24fps, 25fps, 30fps, or custom frame rates to control motion blur and flicker.
See also: Frames to Timecode Converter (23.976, 24, 25, 29.97)
De-squeeze anamorphic plates captured at 1.3×, 1.5×, 1.8×, or 2× so you know the final delivery resolution for cinema scope, streaming, or dailies playback.
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Relation between width and height of an image (e.g., 16:9). Pixel dimensions that share the same ratio are proportional.
Difference between shoot FPS and playback FPS. 120→24 fps yields 5× slower (~20% speed); durations scale accordingly.
Timecode labels frames as hh:mm:ss:ff. This tool uses non-drop (NDF). Broadcast often uses drop-frame at 29.97 to match clock time.
Angle at the film gate (°) maps to shutter speed: 1/x = (360×FPS)/Angle. 180° ≈ natural motion blur; 90° is crisper.
Crop factor compares sensor diagonal to reference (default Full Frame 43.27 mm). Equivalent focal = focal × crop factor. FOV = 2·atan(size/(2·focal)).
Squeeze (e.g., 1.33×, 2×) widens the horizontal view. De-squeeze multiplies width; aspect ratio and FOV change accordingly.
Enter width or height in pixels and select a preset ratio (16:9 for YouTube, 9:16 for TikTok/Instagram Reels, 1:1 for square, 4:5 for Instagram feed, 4:3 legacy, 2.39:1 scope). Click Calculate to get the matching dimension and actual ratio.
Set Shoot FPS to 120 or 240 and Playback FPS to 24, 25, or 30. The calculator shows the slowdown factor (e.g., 5× slower) and converts durations, useful for editing and storyboards.
Enter FPS and either total frames or a timecode in hh:mm:ss:ff. Our non‑drop timecode converter returns the equivalent frames or timecode instantly.
Use 1920×1080 (16:9) for YouTube, 1080×1920 (9:16) for TikTok/Reels/Shorts, 1080×1080 (1:1) for square, and 1080×1350 (4:5) for Instagram portrait. The ratio tool computes any custom size.
Yes. Calculate Video is free, minimal, private, cookie‑less, and works offline once loaded.