Portrait feed calculator
4:5 Aspect Ratio Calculator
Use this 4:5 calculator to create portrait feed images with more vertical space than a square post.
Ratio preview
Instagram portrait posts, Facebook feed ads, product images, travel posts, and mobile-friendly feed creatives.
Calculate 4:5 dimensions
Enter width or height. The matching dimension updates automatically to keep the 4:5 shape.
4:5 result
1,080 × 1,350
4:5 ratio
- Decimal
- 0.800:1
- Orientation
- Portrait
- CSS
- aspect-ratio: 4 / 5;
Common 4:5 sizes
| Use | Size | Note |
|---|---|---|
| Social portrait | 1080 × 1350 | 4:5 feed design example; confirm the current destination placement before publishing. |
| Compact portrait | 800 × 1000 | Useful for lightweight previews. |
| High-res portrait | 1600 × 2000 | Good for sharper design exports. |
| Ad creative | 1200 × 1500 | Useful portrait ad design baseline. |
Best uses
Direct answer
What is the 4:5 aspect ratio?
The 4:5 aspect ratio is a portrait frame measuring four units wide for every five units high. A common social-image size is 1080 × 1350 pixels. Compared with a square image, 4:5 provides more vertical space in a feed while remaining shorter than full-screen 9:16 stories, Reels, or Shorts.
Find height
height = width × 5 ÷ 4
Find width
width = height × 4 ÷ 5
| Concept | What it describes | Example |
|---|---|---|
| Aspect ratio | The proportional shape of a frame | 4:5 |
| Resolution | The number of pixels in that frame | 1080 × 1350 |
Crop and placement check
A centered crop from 1080 × 1920 (9:16) to 1080 × 1350 (4:5) removes 570 pixels in height: 285 from the top and 285 from the bottom. Move the crop if the subject is off-center, or use fit with padding to retain the complete image. Feed crops and profile-grid previews can differ; inspect both in the destination app.
How to use 4:5
Use 4:5 for portrait feed visibility
Choose the actual placement before exporting: an organic feed photo, feed image ad, and Reel are different destinations. Use 1080 × 1350 as a 4:5 design example, not a universal platform requirement. Meta recommends 9:16 video for Reels ads, so prepare a separate 1080 × 1920 composition when that is the destination. Preview each crop before publishing.
Frequently asked questions
Is 1080 × 1350 a 4:5 ratio?
Yes. 1080 × 1350 simplifies to 4:5.
Is 4:5 better than square for Instagram?
At the same displayed width, 4:5 is 25% taller than a square. That is a geometric difference, not evidence of better engagement. Choose the crop that preserves your subject and verify the exact feed, profile preview, or advertising placement.
Is 4:5 the same as 5:4?
No. 4:5 is portrait, while 5:4 is landscape.
Can I convert 9:16 to 4:5?
Yes, but you will usually crop top and bottom space. Keep key subjects near the center before converting from story format to portrait feed format.
Review record
Sources and review date
Last reviewed September 5, 2026. Calculations use the width-to-height relationship shown on this page.
More ratio calculators
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Use dedicated pages when you know the final placement or content shape.
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Calculate 4:3 → Vertical video9:16 Aspect Ratio Calculator
Calculate 9:16 dimensions for TikTok, Instagram Reels, YouTube Shorts, stories, and vertical mobile video.
Calculate 9:16 →Guide collection
Related guides
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