3:4 aspect ratio
A 3:4 aspect ratio means 3 parts wide for every 4 parts tall, or 0.75. It is the shape of a phone photo held upright and of 6×8, 9×12, 12×16 and 18×24 prints. Enter one side to get the other, or drop in artwork to crop it to 3:4 at 300 DPI.
3:4 calculator (inches, cm or pixels)
Type one side; the other fills in.
or drag a PNG or JPG here ·
Set to 3:4 only. The main resizer makes every ratio from one upload. Everything runs in your browser; the artwork is not uploaded.
3:4 aspect ratio print sizes
| Size | Centimetres | Pixels at 300 DPI |
|---|---|---|
| 3×4 in | 7.6×10.2 cm | 900×1,200 |
| 6×8 in | 15.2×20.3 cm | 1,800×2,400 |
| 9×12 in | 22.9×30.5 cm | 2,700×3,600 |
| 12×16 in | 30.5×40.6 cm | 3,600×4,800 |
| 18×24 in | 45.7×61 cm | 5,400×7,200 |
| 24×32 in | 61×81.3 cm | 7,200×9,600 |
Metric sizes with the same shape: 15×20 cm, 30×40 cm, 45×60 cm, 60×80 cm. Every size in the table prints from one 3:4 file, because printers scale the file down without cropping.
Where 3:4 is used
- Phone photos: most phone cameras shoot 4:3, which is 3:4 when the phone is upright, so a phone photo prints at 12×16 or 18×24 without cropping.
- Posters: 18×24 is a common poster size and is 3:4.
- Metric frames: 30×40 cm and 60×80 cm are 3:4.
How to crop an image to 3:4
Drop the image into the tool above. It cuts the largest 3:4 area it can from the middle of the picture; drag inside the preview to move it. The download is a JPG at 300 DPI, sized for the largest print in the table and under 20 MB, so it can go straight into an Etsy listing or to a print lab.
FAQ
Is 3:4 the same as 4:3?
Same shape: 3:4 is portrait, 4:3 is landscape. Phones shoot 4:3 and the photo becomes 3:4 when you hold the phone upright.
What sizes are 3:4?
6×8, 9×12, 12×16, 18×24 and 24×32 inches; 15×20, 30×40, 45×60 and 60×80 cm.
What is 3:4 in pixels?
Any size where width ÷ height = 0.75, for example 1,080 × 1,440, or 5,400 × 7,200 for an 18×24 print at 300 DPI.
Is 8x10 a 3:4 ratio?
No, 8×10 is 4:5 (0.8). A 3:4 image in an 8×10 frame loses a strip from its top or bottom.
More print size guides
Standard photo print sizes · 4:5 aspect ratio · 3:4 aspect ratio · 2:3 aspect ratio · 8×10 vs 8.5×11 · Bookmark size · Resize one artwork to every size