What aspect ratio are Reels, TikTok and Shorts?

9:16 vertical, usually 1080×1920 pixels.

What aspect ratio should an Instagram post be?

1:1 (1080×1080) for square or 4:5 (1080×1350) for portrait, which takes up more of the feed.

Common 16:9 sizes are 1280×720 (HD), 1920×1080 (Full HD) and 3840×2160 (4K).

Aspect ratio

Work out the ratio of any size, or the exact pixels you need for YouTube, Reels, TikTok and Instagram.

Find the ratio of a size

WidthpxHeightpx

Aspect ratio

16:9

1.778 : 1

Get the right size for a ratio

YouTube, TV, laptop

Widthpx

Height for this ratio

608 px

1080 × 608 · or height 1080 → width 1920

Step 1
Enter a size
Type a width and height to get the simplified ratio, like 1920×1080 → 16:9.
Step 2
Pick a ratio
Choose 16:9, 9:16, 1:1, 4:5 or another preset.
Step 3
Get the pixels
Enter a width to get the matching height (or the other way round).