Instagram Photo Size Calculator
Choose a post format and calculate a matching size without stretching your photo.
Use the free Instagram Photo Size Calculator
This tool runs locally in your browser. Your selected image is not uploaded to this website.
How the result works
Different Instagram placements use different aspect ratios. A square feed image uses 1:1, portrait feed commonly uses 4:5, landscape feed uses about 1.91:1 and stories use 9:16. Platform behavior can change, so preview important posts in the current app before publishing.
- Use 4:5 to occupy more vertical feed space
- Keep important details away from story edges
- Enhance the original before resizing and export once
Common questions
What size should an Instagram portrait be?
A common portrait feed size is 1080 × 1350 pixels, which uses a 4:5 ratio.
What is the Instagram Story size?
A common full-screen story size is 1080 × 1920 pixels, or 9:16.
Why does an uploaded photo look soft?
A weak source, repeated exports, unsuitable dimensions or platform compression can reduce visible detail.