Instagram Crop Calculator
Work out exactly how much of your original photo Instagram will crop away for a given target ratio.
Result looking good? Take it further with Grohubz — your Instagram growth toolkit.
How this tool works
Enter your original image dimensions and a target Instagram ratio, and this calculator shows how much gets trimmed from the sides or top and bottom — so you can reframe before you lose an important detail.
- Enter your original image's width and height.
- Pick the target ratio you're posting to (square, portrait, landscape or Story).
- See the cropped dimensions and how much is trimmed from each side.
- Reframe your composition to keep key subjects inside that area.
Tips to get better results
- Shoot slightly wider than you need so you have room to crop into different ratios later without losing subjects.
- For portraits, keep faces in the centre third of the frame — that's the area every common Instagram ratio preserves.
- Use the crop preview before exporting rather than discovering the crop after Instagram has already applied it.
Grow the account you just optimised
Grohubz gives creators and brands the growth playbooks, content calendars and analytics dashboards that turn a well-sized post into consistent follower growth.
Visit GrohubzFrequently asked questions
Does Instagram crop my photo automatically?
Yes, if your image's ratio doesn't match a supported feed ratio, Instagram crops it to the closest allowed shape during upload.
Can I undo an Instagram crop after posting?
No — you'd need to delete the post and re-upload a correctly cropped version.
What's the safest ratio to shoot in to avoid cropping?
Shooting at 4:5 (portrait) covers the most common feed use case without any Instagram-side cropping.
FREE TOOL BY GROHUBZ
Want the strategy to match the specs? Grohubz helps you plan, schedule and grow on Instagram — not just measure it.
This checker is built and maintained by the team at grohubz.com.