Simplified Ratio
16:9
4:5 Aspect Ratio
4:5 is a strong portrait ratio used in social feeds and many print compositions.
Aspect Ratio Calculator
Enter image width and height to get a simplified ratio, then resize while preserving proportions.
Resize From Width
1200 x 675
Resize From Height
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Common 4:5 dimensions
| Size | Best for |
|---|---|
| 1080 x 1350 | Instagram portrait post — the tallest size the feed allows |
| 1600 x 2000 | Higher-resolution portrait for print-on-demand product mockups |
| 16 x 20 in | Common portrait print size at the same 4:5 proportions |
| 4 x 5 in | Classic photographic print size, same ratio at smaller scale |
Why creators use 4:5
The 4:5 ratio gives a taller visual footprint than square images while remaining feed-friendly on mobile. This makes it popular for portrait photography, editorial graphics, and social ads where vertical space can improve attention and click-through behavior.
The key production advantage is consistency: if your template system starts at 4:5, you can generate multiple variants — square crops, story crops — with fewer crop issues than resizing ad hoc from a landscape master.
Mistakes to avoid
- Exporting at 1080 x 1920 (9:16) and expecting it to display fully in a feed post — Instagram and most feeds cap portrait posts at 4:5 and crop anything taller.
- Cropping a square 1:1 image down to 4:5 after the fact — this trims the sides and can cut off the edges of a subject that was framed for square.
- Ignoring print proportions — a 4:5 digital canvas maps cleanly to 8x10, 16x20, and other common print sizes, so plan the crop before, not after, ordering prints.
FAQ
Is 4:5 the same as 8x10?
Yes — 8 ÷ 10 simplifies to 4:5, so any file sized for a 4:5 digital post will also fit an 8x10 print without cropping.
Why not just use 9:16 for everything?
9:16 is taller and works for Stories and Reels, but standard feed posts cap at 4:5 — anything taller gets auto-cropped, often cutting off the top or bottom of your image.