Aspect Ratio Calculator
Calculate width, height, and ratio for video, image, and screen sizes
Cara pakai
- 1Pick a preset or enter a ratio
16:9 for YouTube, 9:16 for TikTok/Shorts/Reels, 1:1 for Instagram feed, 4:5 for Instagram portrait.
- 2Enter a known dimension
Type the width you have - the calculator fills in the matching height (and vice versa).
- 3Read the ratio and pixel plan
The tool shows the exact ratio, GCD-reduced form, and a copy-ready width×height pair.
Tentang Aspect Ratio Calculator
Free aspect ratio calculator. Enter any two of width, height, or ratio to get the third - perfect for resizing video, cropping images, or planning responsive layouts. Includes presets for 16:9, 9:16 (vertical), 1:1, 4:3, 21:9 (cinematic), and every social platform. Aspect Ratio Calculator di 712 Tools jalan sepenuhnya di browser kamu pakai JavaScript API native - tidak ada server yang pernah melihat data kamu. Artinya hasil instan, privasi penuh, dan tanpa batas upload.
Buat sesi debug, quick sanity check, atau incident produksi - tool ini gratis dipakai sebanyak yang kamu butuh. Tanpa watermark, tanpa signup, dan tanpa ads di dalam tool.
Pertanyaan yang sering ditanyakan
What ratio is a YouTube video?
16:9 for standard videos, 9:16 for Shorts, and 4:3 for very old uploads. 4K, 1080p, and 720p all share the same 16:9 aspect.
TikTok, Reels, Shorts - which ratio?
All three use 9:16 (portrait), typically 1080×1920. Anything else gets letterboxed or cropped.
How do I keep aspect when resizing?
Enter your original width and height, then change either dimension - the calculator updates the other to preserve the ratio.
What's 21:9?
The 'cinematic' or ultrawide ratio (e.g. 2560×1080). Common for film and ultrawide monitors - some creators letterbox to 21:9 for a cinematic feel.
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