Photo 4×6 paper size
101.6 × 152.4 mm
4 × 6 inches · 10.16 × 15.24 cm · aspect ratio 1:1.5
Photo 4×6 size is 101.6 × 152.4 mm. Those are the Photo 4×6 dimensions a printer works to; the same sheet in centimetres, inches, points and pixels is below.
It is written 4x6 and 4 by 6 as often as 4×6 — the same sheet however it is typed. Sizes named by their inches like this one get asked for by the numbers rather than by a letter code, which is why the spelling varies and the sheet does not.
What Photo 4×6 is for
4 × 6 inches is the standard photo print and the only common print size that matches the 2:3 aspect ratio most DSLR and mirrorless sensors produce. That is what makes it the default: a full-frame photograph prints at 4 × 6 with nothing cropped. Every other common frame size requires losing part of the image.
Photo 4×6 dimensions in every unit
| Unit | Width | Height |
|---|---|---|
| Millimetres | 101.6 mm | 152.4 mm |
| Centimetres | 10.16 cm | 15.24 cm |
| Inches | 4 in | 6 in |
| Points (PostScript) | 288 pt | 432 pt |
Photo 4×6 in pixels
Pixel dimensions depend entirely on the resolution you are working at — there is no single "pixel size" for a sheet of paper. Photo 4×6 size in pixels has every resolution, with file sizes and canvas setup.
| Resolution | Pixels | Use |
|---|---|---|
| 72 DPI | 288 × 432 | Screen preview only — far too coarse to print |
| 150 DPI | 600 × 900 | Draft printing, internal documents |
| 300 DPI | 1200 × 1800 | The standard for commercial print |
| 600 DPI | 2400 × 3600 | Fine detail, line art, archival scanning |
Setting up a print document? Use 300 DPI and add 3 mm of bleed on every edge unless your printer specifies otherwise.
How Photo 4×6 relates to the rest of the series
At 101.6 × 152.4 mm (4 × 6 inches) the aspect ratio is 1:1.500. This size is not part of a halving series, so there is no fixed scaling factor to the next size up or down — each one is defined on its own terms.
The closest ISO sheet by area is A6 at 105 × 148 mm — near enough the same area. The proportions differ, though: A6 is 1:1.414 like every A size, and this one is 1:1.500, so content laid out for one does not fill the other without cropping or white space.
About Photo 4×6
The standard photo print, matching the 2:3 aspect ratio most DSLR and mirrorless sensors produce.
Other Photo prints sizes
| Size | Millimetres | Inches |
|---|---|---|
| Photo 5×7 | 127 × 177.8 mm | 5 × 7 in |
| Photo 8×10 | 203.2 × 254 mm | 8 × 10 in |
| Photo 6×8 | 152.4 × 203.2 mm | 6 × 8 in |
| Photo 8×12 | 203.2 × 304.8 mm | 8 × 12 in |
| Photo 11×14 | 279.4 × 355.6 mm | 11 × 14 in |
| Photo 16×20 | 406.4 × 508 mm | 16 × 20 in |
Frequently asked questions
What size is Photo 4×6 in mm?
101.6 × 152.4 mm.
What size is Photo 4×6 in inches?
4 × 6 inches.
What size is Photo 4×6 in pixels?
There is no single answer — it depends on resolution. At the print standard of 300 DPI it is 1200 × 1800 pixels; at 72 DPI it is only 288 × 432.