12×18 in print
3600 × 5400
Photo prints · 3:2
| Pixel size | 3600 × 5400 px |
|---|---|
| Aspect ratio | 3:2 (2:3) |
| Total pixels | 19,440,000 · 19.4 MP |
| Print size at 300 dpi | 305 × 457 mm |
| Orientation | Portrait |
| Uncompressed size | 55.6 MB |
| Rough JPEG size | 4746 KB |
The sizes a photo lab prints. If the aspect ratio does not match, the top and bottom or the sides get cut.
How to read this
- If the aspect ratio is wrong, the platform crops it. Matching the ratio matters more than matching the pixel count.
- Print assumes 300 dpi: divide the pixels by 300 for inches, then multiply by 25.4 for millimetres.
- On screen, dpi is irrelevant — only the pixel size counts. Dpi only means something when you print.
- Enlarging a small image makes it blurry. Start bigger than you need and scale down instead.
Frequently asked questions
Q. What size is 12×18 in print?
3600×5400 pixels, a 3:2 aspect ratio — 19,440,000 pixels in all, about 19.4 megapixels.
Q. How big is 12×18 in print when printed?
At 300 dpi it comes out 305×457 mm — the pixels divided by 300 for inches, then multiplied by 25.4.
Q. How large is a 12×18 in print file?
Uncompressed, roughly 55.6 MB; saved as JPEG, usually around 4746 KB. A photograph and a flat graphic can differ several times over.
Q. What group does 12×18 in print belong to?
The photo prints group, and it is taller than it is wide. Other sizes with the same ratio are listed below.
Same aspect ratio
When the ratio matches you can just resize — no cropping needed.