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Video Aspect Ratio Calculator

Free video aspect ratio calculator. Convert between 16:9, 9:16, 4:3, 1:1 and custom ratios. Calculate dimensions for YouTube, TikTok, Instagram Reels, and any platform.

Lock aspect ratio (changing one dimension scales the other)

Aspect Ratio

16:9

Resolution

1920 x 1080

Orientation

Landscape

1920 x 1080

Common conversions from 16:9

ResolutionLabelMegapixels
853 x 480480p (SD)0.41 MP
1280 x 720720p (HD)0.92 MP
1920 x 10801080p (Full HD)2.07 MP
2560 x 14401440p (2K)3.69 MP
3840 x 21602160p (4K)8.29 MP
7680 x 43204320p (8K)33.18 MP

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Frequently Asked Questions

What aspect ratio should I use for YouTube?
YouTube standard videos use 16:9 (1920x1080 for 1080p). YouTube Shorts use 9:16 (1080x1920). Our calculator provides presets for all YouTube formats.
What is the TikTok video aspect ratio?
TikTok videos use 9:16 (1080x1920 pixels). This is the same aspect ratio used by Instagram Reels and YouTube Shorts.
How do I change video aspect ratio without cropping?
You can add letterboxing (black bars) or use AI-powered tools to extend the background. Our video generation gigs can help reformat videos for any platform.
What aspect ratio is best for Instagram?
Instagram supports multiple ratios: 1:1 for feed posts, 4:5 for portrait posts, 9:16 for Stories and Reels, and 16:9 for landscape. Our calculator shows dimensions for each.