How do you calculate aspect ratio?

Divide the width and height by their greatest common divisor. For example, 1080 × 1920 simplifies to 9:16.

What aspect ratio is 1080 × 1920?

1080 × 1920 is 9:16, the standard vertical ratio for TikTok, Instagram Reels, Instagram Stories and YouTube Shorts.

What aspect ratio is 1080 × 1350?

1080 × 1350 is 4:5, the common portrait feed ratio for Instagram posts and LinkedIn portrait images.

What aspect ratio is 1920 × 1080?

1920 × 1080 is 16:9, the standard landscape ratio for YouTube videos, YouTube thumbnails and many X or Twitter images.

Can I scale a ratio to a new width?

Yes. Enter your current width and height, then set the target width. The calculator keeps the same shape and gives you the matching height.

Aspect Ratio Calculator

Simplify image and video dimensions, scale them to a new width and match the ratio to common social media sizes.

Ratio

Width

Height

Scale to width

9:16

TikTok, Reels, Shorts and Stories.

Simplified ratio9:16

Decimal0.5625

Scaled height1920

Matching social sizes

TikTok video size Instagram Story size YouTube Shorts size

Frequently asked

How do you calculate aspect ratio?: Divide the width and height by their greatest common divisor. For example, 1080 × 1920 simplifies to 9:16.
What aspect ratio is 1080 × 1920?: 1080 × 1920 is 9:16, the standard vertical ratio for TikTok, Instagram Reels, Instagram Stories and YouTube Shorts.
What aspect ratio is 1080 × 1350?: 1080 × 1350 is 4:5, the common portrait feed ratio for Instagram posts and LinkedIn portrait images.
What aspect ratio is 1920 × 1080?: 1920 × 1080 is 16:9, the standard landscape ratio for YouTube videos, YouTube thumbnails and many X or Twitter images.
Can I scale a ratio to a new width?: Yes. Enter your current width and height, then set the target width. The calculator keeps the same shape and gives you the matching height.

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