Photo print guide
4 × 6 photo size: pixels, inches and millimetres
A 4 × 6 photo print measures 4 × 6 inches, or 101.6 × 152.4 mm.
Physical size4 × 6 in · 101.6 × 152.4 mm
Aspect ratio2 : 3
300 PPI1200 × 1800 px
Use the density table to choose pixels for standard lab prints, enlargements, or high-resolution masters.
Most phone and camera images are not exactly 2:3, so inspect the crop before ordering prints.
Pixel dimensions at common PPI settings
| PPI | Required pixels |
|---|---|
| 72 | 288 × 432 px |
| 96 | 384 × 576 px |
| 150 | 600 × 900 px |
| 300 | 1200 × 1800 px |
| 600 | 2400 × 3600 px |
Use this size
Check your image for this size.
The calculator is pre-set to this print size.
Print resultLIVE
Target quality
✓
Meets the selected PPI target
Effective resolution: 672 PPI · 4 × 6 in
Maximum recommended print size
256 × 341 mm · 10.1 × 13.4 in
Pixels required for this target
1200 × 1800 px
Aspect ratio and crop
Left and right edges will be cropped · 11.11%
Production setup
107.6 × 158.4 mm · 1271 × 1871 px
Common size comparison
| Size | PPI | Status |
|---|---|---|
| A5 | 488 | Meets target |
| A4 | 345 | Meets target |
| A3 | 244 | Usable |
| US Letter | 356 | Meets target |
| 4 × 6 in | 672 | Meets target |
| 5 × 7 in | 576 | Meets target |
| 8 × 10 in | 378 | Meets target |
● All calculations stay in your browser
Frequently asked questions
How many pixels is 4 × 6 at 300 PPI?
1200 × 1800 pixels.
What ratio is a 4 × 6 photo?
It has a 2:3 ratio.
Can a phone photo print at 4 × 6?
Usually yes, but it may crop or show borders depending on the image ratio.