---
title: "What Aspect Ratio Should Instagram Posts Use? | ImageQuarry"
url: https://www.imagequarry.com/faq/what-aspect-ratio-for-instagram-posts/
last_updated: 2026-10-20
---

# What aspect ratio should I use for Instagram posts?

Use 4:5 portrait, 1080 x 1350 pixels, for most feed posts: it fills the most screen of the classic feed shapes. Instagram's Help Center lists feed photos from 1.91:1 landscape to 4:5 portrait at up to 1080 pixels wide, and crops other shapes to fit.

Instagram's Help Center says photos shared at a width between 320 and 1080 pixels keep their resolution if the ratio is between 1.91:1 and 4:5, wider photos are sized down to 1080 pixels, and unsupported ratios are cropped.

For ads in the Instagram feed, Meta's Ads Guide recommends 4:5 at 1440 x 1800 pixels.

Check the crop preview in the app before you post, and keep the subject away from the top and bottom edges so a slightly different crop doesn't cut it.

_Sources: Instagram Help Center, photo resolution; Meta Ads Guide, Instagram Feed image ads; both checked October 20, 2026._

Next step: [What aspect ratio do Instagram Stories and Reels use?](https://www.imagequarry.com/faq/what-aspect-ratio-for-instagram-stories-and-reels/)

## Related questions

- [What aspect ratio do Instagram Stories and Reels use?](https://www.imagequarry.com/faq/what-aspect-ratio-for-instagram-stories-and-reels/): 9:16 vertical, full screen.
- [What is a 4:5 aspect ratio used for?](https://www.imagequarry.com/faq/what-is-a-4-5-aspect-ratio/): A slightly tall portrait shape used in social feeds and 8 x 10 prints.
- [What image aspect ratios do Facebook and Instagram ads use?](https://www.imagequarry.com/faq/what-size-for-facebook-ads/): 4:5 for feeds, 9:16 for Stories and Reels.
- [What aspect ratio does TikTok use?](https://www.imagequarry.com/faq/what-aspect-ratio-for-tiktok/): 9:16 vertical.
- [What is an aspect ratio?](https://www.imagequarry.com/faq/what-is-an-aspect-ratio/): The width of an image compared to its height.

Last reviewed 2026-10-20 by ImageQuarry.

## Make your next post in the right shape

Ask for the change you want, then check the new version against Instagram's 4:5 size.