Free Video Aspect Ratio Calculator
Calculate video aspect ratios, check platform compatibility, and find the right dimensions for any social media platform.
Platform Dimensions Reference
Frequently Asked Questions
What aspect ratio is best for social media?
9:16 (vertical) is best for TikTok, Reels, Shorts, and Stories. 16:9 (landscape) works for YouTube. 1:1 (square) is versatile for feeds.
How do I calculate aspect ratio?
Divide both width and height by their greatest common divisor (GCD). For example, 1920×1080 → divide both by 120 → 16:9.
What resolution should my vertical videos be?
1080×1920 pixels is the standard for vertical video across TikTok, Instagram Reels, YouTube Shorts, and Snapchat.
Need to Post to 8 Platforms at Once?
ShortSync lets you upload once and publish to TikTok, YouTube Shorts, Instagram Reels, Facebook Reels, X, Threads, Snapchat, and Bluesky — all from one place.