Instagram Carousel Size Guide
Learn the exact sizes for Instagram carousel posts. Plan your portrait, square, and landscape carousel structures to boost feed engagement.
Canvas preview
Adjust ratio to preview layout dimensions in feed.
Carousel slide planner
Carousel size comparison
Instagram carousels support three aspect ratios. Which one you pick mostly comes down to what you're publishing and how much screen space you want.
| Layout Format | Aspect Ratio | Recommended Resolution | Best Use Case |
|---|---|---|---|
| Portrait | 4:5 aspect ratio | 1080 x 1350 pixels | Detailed guides, storytelling, text-heavy slide graphics. |
| Square | 1:1 aspect ratio | 1080 x 1080 pixels | Standard photography, quotes, grid layouts. |
| Landscape | 1.91:1 aspect ratio | 1080 x 566 pixels | Horizontal travel shots, product panoramas. |
Why 4:5 portrait beats square for most posts
A 4:5 portrait post (1080x1350 px) covers roughly 30% more vertical space on mobile than a square post. That's not nothing when you're competing against everything else in the feed.
Less competition in the frame
Because portrait posts are taller, they push nearby posts and ads further down the screen. Your content gets more of the viewer's attention before they scroll away.
Multiple chances to engage
Carousel posts give users multiple chances to engage because each slide can create a new reason to keep swiping and interacting.
A simple 10-slide structure that works, even though Instagram now supports up to 20 slides
Instagram supports up to 20 slides, but focus remains key. Keep tips to 5–10 slides and deeper guides to 10–15 slides to maintain audience focus. Here is the standard outline flow:
Grab attention. Use bold fonts and high-contrast visuals. Promise a specific benefit.
Define the core challenge or problem. Build empathy with the reader's struggle.
Deliver your main tips or steps. Use one key point per slide to avoid clutter.
Summarize the main learnings in a clear, digestible bullet point format.
Guide the next step. Direct them to 'Save for later' or 'Click the bio link'.
Frequently Asked Questions
What is the best size for an Instagram Carousel post?
The best size for maximum feed real estate is Portrait (1080 x 1350 pixels, 4:5 aspect ratio). This height fills more screen space as users scroll, leading to higher engagement compared to square or landscape.
Can I mix different sizes in a single carousel?
No. Instagram forces all slides in a carousel to match the aspect ratio of the first slide. If your first slide is square (1:1), all subsequent slides will be cropped to square, even if they were uploaded as portrait.
What are the three main Carousel dimensions?
The three standard dimensions are: Square (1080 x 1080 pixels, 1:1), Portrait (1080 x 1350 pixels, 4:5), and Landscape (1080 x 566 pixels, 1.91:1).
How many slides can I add to a single carousel?
Instagram allows you to upload up to 20 photos or videos in a single carousel post. However, we recommend sticking to 5-10 slides for educational tips and 10-15 slides for detailed tutorials to maximize completion rate.