Ratio guide
3:4 Aspect Ratio
A 3:4 frame is 3 units wide for every 4 units high. Exact sizes include 600 x 800, 1200 x 1600, and 1536 x 2048 pixels. It is the portrait version of 4:3 and is wider than 2:3, leaving useful room beside the main subject.
Ratio-locked calculator
Calculate matching dimensions
Change either value. The other stays locked to 3:4.
Common 3:4 pixel dimensions
| Width | Height | Total pixels |
|---|---|---|
| 600 px | 800 px | 480,000 |
| 900 px | 1,200 px | 1,080,000 |
| 1,200 px | 1,600 px | 1,920,000 |
| 1,536 px | 2,048 px | 3,145,728 |
| 1,800 px | 2,400 px | 4,320,000 |
What 3:4 means
Three width units correspond to four height units, giving a decimal ratio of 0.75. Multiply width by 4/3 to find the matching height.
How it compares
A 3:4 frame is taller than 4:5 but wider than 2:3 at the same height. It leaves more room beside the subject than a narrower 2:3 frame.
Common uses
- Portrait photos, scanned documents, and artwork for portrait tablets.
- Product images, covers, and educational graphics that need room around the main subject.
Fit, Crop, and Pad
Keep all contentCrop
Fill the framePad
Add background
Rotating a 4:3 image gives an exact 3:4 match. Fitting a 4:5 portrait inside 3:4 leaves narrow space above and below; Crop removes a small amount from the left and right. Pad keeps the whole image and fills the extra space with a background.
Try this ratio with your imageFormula
Calculate the missing side
height = width × 4 / 3width = height × 3 / 4
For a 1200 px width, height = 1200 x 4 / 3 = 1600 px. For a 2400 px height, width = 2400 x 3 / 4 = 1800 px.
Frequently asked questions
What sizes use a 3:4 ratio?
600 x 800, 900 x 1200, 1200 x 1600, and 1536 x 2048 pixels all simplify exactly to 3:4.
Is 3:4 a rotated 4:3 ratio?
Yes. Swapping width and height rotates the same geometric proportion from landscape 4:3 to portrait 3:4.
Is 3:4 taller than 4:5?
Yes. At the same width, 3:4 is about 6.7% taller than 4:5.