4:5 Aspect Ratio Calculator
4:5 gives a portrait canvas that is taller than 1:1 while staying compact for common social feeds. Enter a width or height and AspectRatioZ calculates the matching 4:5 dimension instantly.
Calculate 4:5
What does a 4:5 aspect ratio mean?
A 4:5 frame is four units wide for every five units high. Its decimal width-to-height value is 0.8, making it a portrait orientation that is taller than a square but shorter than 9:16.
Exact examples include 800 × 1000, 1080 × 1350, 1200 × 1500, 1600 × 2000 and 2160 × 2700. The pixel dimensions can grow or shrink while the proportional shape remains unchanged.
How to calculate 4:5 dimensions
Multiply width by 5/4 to find height. Multiply height by 4/5 to find width.
height = width × 5 ÷ 4width = height × 4 ÷ 5Example: 1080 × 5 ÷ 4 = 1350.
Using widths divisible by four avoids fractional heights and makes the result easier to export as whole pixels.
4:5 vs. 1:1 and 9:16
A 1:1 square is shorter and easier to reuse across grids. A 9:16 frame is much taller and suits full-screen vertical layouts. The 4:5 ratio sits between them, making it useful when you want portrait emphasis without an extremely tall canvas.
Do not confuse 4:5 with 5:4. Swapping the numbers rotates the orientation from portrait to landscape.
Composing a portrait image
Place the primary subject inside the central area and leave breathing room near edges. Interfaces may overlay controls or apply small responsive crops. If your source is 9:16, converting it to 4:5 usually removes some content from the top and bottom; check the crop before exporting.
Use the fit and crop calculator to compare options without modifying the original file.
Common 4:5 sizes
| Width | Height | Ratio |
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Next steps for 4:5 content
Adapting a landscape photo to a portrait feed? Measure the 4:5 crop before placing text or cutting away the subject. Check the named placement in the social media size guide; this page explains the ratio, not every platform's upload rules.
Compare 4:5 with the 1:1 square calculator and 9:16 vertical calculator, or inspect your source with the image checker.
Frequently asked questions
Is 1080 × 1350 exactly 4:5?
Yes. Dividing both dimensions by 270 gives 4:5.
What is the difference between 4:5 and 5:4?
4:5 is portrait because height is larger. 5:4 is landscape because width is larger.
How do I crop a square image to 4:5?
At the same height, crop 20% of the square's total width to create 4:5—10% from each side for a centered crop. Alternatively, expand the canvas above and below to keep the complete square.
Does 4:5 define image quality?
No. It defines only the shape. More pixels generally provide more detail, but the required resolution depends on the destination.