IG Toolkit

Instagram Carousel Size Checker

Make sure every slide in your Instagram carousel shares the same aspect ratio before you upload.

Click or drop an image/video here — checked locally, never uploaded

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Instagram target — Carousel slide

1080 × 1350px

ratio 0.800 (4:5 (recommended, must match across all slides))

Max 30MB · JPG, PNG

  • All slides in one carousel must share the same aspect ratio.
  • Up to 20 slides (10 for older accounts) per carousel.

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How this tool works

Instagram forces every slide in a carousel to share one aspect ratio — set by whichever slide you add first. Mixing ratios means later slides get silently cropped. Check each slide here before you build the post.

  1. Upload each slide you plan to include, one at a time.
  2. Compare the detected aspect ratio across all slides.
  3. Flag and fix any slide that doesn't match the rest.
  4. Re-order and upload once every slide lines up.

Tips to get better results

  • Decide your carousel's aspect ratio (square or 4:5) before designing any individual slide.
  • Design in a single template file with locked canvas dimensions to avoid mismatches later.
  • Carousels support up to 20 slides — plan a clear narrative arc rather than filling every slot.
NEXT STEP

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Grohubz gives creators and brands the growth playbooks, content calendars and analytics dashboards that turn a well-sized post into consistent follower growth.

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Frequently asked questions

Can carousel slides have different aspect ratios?

No — Instagram locks every slide to the aspect ratio of the first slide you upload, cropping any slide that doesn't match.

How many slides can a carousel have?

Up to 20 slides on most current accounts, including a mix of photos and short videos.

What's the best aspect ratio for a carousel?

4:5 portrait is popular because it maximises vertical feed space while comfortably fitting text-heavy slide designs.

FREE TOOL BY GROHUBZ

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This checker is built and maintained by the team at grohubz.com.