If you’ve been scrolling through your Instagram feed recently, you’ve probably noticed some changes—especially when it comes to how posts appear in the grid.
As with any social platform, Instagram isn’t shy about tweaking things here and there, and 2025 is no exception. That’s why it’s important to get familiar with the new sizes, so your content continues to look its best!
If you’re ready to optimise your Instagram posts for 2025, keep reading! We’ve got you covered with all the latest updates on Instagram’s sizes.
How Has The Instagram Grid Layout Changed?
If you’re wondering why your perfectly sized posts are looking a bit off in your Instagram feed, it’s because Instagram has updated its grid layout. That means the way your images appear is slightly different from what we’re used to. But don’t panic! This is the perfect time to fine-tune your content for maximum impact.

So, What’s the New Grid Size?
Instagram has introduced a 4:5 grid, but here’s the catch: while that’s what people are calling it, the new preview grid actually works on a 3:4 ratio. But before you start creating content in a 3:4 format, here’s the thing—Instagram can’t even support that format. So, don’t waste your time creating 3:4 content for your grid. Stick with the 4:5 ratio, and you’ll be good.
Instagram Feed Size Update
When it comes to feed posts, it’s all about the 4:5 ratio. This size is now your go-to for both feed posts and carousels. Here’s the rundown:
- 4:5 Ratio – (1080 x 1350px): This is the sweet spot for feed posts and carousels. It’s the ideal size to fill the screen and make your content pop.
- 3:4 Ratio – (1015 x 1350px): This is what people with the update will see in their feed. It’s the new preview size for your content. Just keep in mind, you don’t need to create content in 3:4 since Instagram doesn’t support that format.
- 1:1 Ratio – (1080 x 1080px): This was the old standard for Instagram posts and the size people without the update will still see in their grid. It’s a bit outdated now, so try to stick with the 4:5 ratio wherever possible!
Instagram Reel Size Update
Reels are still going strong, and getting the right size here is just as crucial. For 2025, here’s the breakdown for the perfect Reel:
- 9:16 Ratio – (1080 x 1920px): This is the ideal size for Reels, as well as Stories and Lives. If you’re not creating your Reels in this format, you’re missing out on optimising them for the best experience.
- 3:4 Ratio – (1015 x 1350px): This is the size that people with the update will see when your Reels and Covers appear in their grid. While it’s supported by Instagram, it’s not the optimal size for the content itself.
- 3:4 Ratio – (1015 x 1350px): This is also what people without the update will see in their grid, but it’s better to stick to the 9:16 ratio for your actual Reels content.
The Sizes You Should Know
Here’s a quick cheat sheet for the most important Instagram sizes you’ll be using in 2025:
- 1:1 Ratio (1080 x 1080px) – This is the old square content, but it’s on its way out. Keep using it only for those who haven’t updated yet.
- 4:5 Ratio (1080 x 1350px) – This is your current ideal post size. Use this for feed posts, carousels, and any content you want to show off in the feed.
- 3:4 Ratio (1015 x 1350px) – This is the new size of the content preview in your grid for people with the update.
- 9:16 Ratio (1080 x 1920px) – This is the size for Stories, Lives, Reels, and Covers. It’s the standard format for vertical content.
What’s Next?
Now that you know the updated Instagram sizes, here’s what you need to do next:
- Stop posting square posts and carousels in 1:1 format. Move to 4:5 content for maximum visibility and impact.
- For those who don’t yet have the update, optimise your images and text for the centre square of the post. This ensures your content looks great even for those who haven’t updated their app yet.
- Always add padding on the sides of your content. Why? Because Instagram crops content slightly on the grid, and you don’t want important parts of your image to get cut off. Trust us—it makes a difference!
Ready To Optimise Your Instagram Strategy?
At Hush Digital, we specialise in creating bespoke digital marketing strategies, including everything from Instagram optimisation to web design. If you’re ready to take your Instagram game to the next level, get in touch with us today!