Reference library
4x6 Photo Size
A 4x6 photo is 4 × 6 inches, 101.6 × 152.4 mm, and 1200 × 1800 px at 300 PPI. See pixel dimensions, ratios and crop notes.
Last checked: 2026-05-03
How we calculate this
Methodology and source handling
We convert physical sizes to inches, multiply by the selected DPI/PPI value, and round to whole pixels.
Quick answer
Copy-ready answer
A 4 × 6 photo is 4 inches wide by 6 inches tall, or 101.6 × 152.4 mm. At 300 PPI, a 4 × 6 photo needs 1200 × 1800 px. The aspect ratio is 2:3, which matches many camera photos and makes 4 × 6 one of the easiest print sizes to use without heavy cropping.
Dimensions and specs
| Inches | 4.00 × 6.00 in | |
|---|---|---|
| Millimeters | 101.6 × 152.4 mm | |
| Centimeters | 10.16 × 15.24 cm | |
| Aspect ratio | 2:3 | |
| 300 PPI pixels | 1200 × 1800 px |
Pixels
Pixel dimensions by DPI
| DPI / PPI | Width | Height | Use |
|---|---|---|---|
| 72 DPI | 288 px | 432 px | Legacy screen reference only |
| 96 DPI | 384 px | 576 px | Browser/CSS reference only |
| 150 DPI | 600 px | 900 px | Draft print or low-resolution proof |
| 300 DPI | 1200 px | 1800 px | Common high-quality photo print target |
| 600 DPI | 2400 px | 3600 px | High-resolution archival or specialist workflow |
Formula
Formula
pixels = inches × PPIFor a 4 × 6 print at 300 PPI:
4 × 300 = 1200 px
6 × 300 = 1800 pxSo the 300 PPI pixel size is 1200 × 1800 px.
Common mistakes
Avoid these photo sizing mistakes
A 4 × 6 print is not 4 × 6 pixels. It is 4 × 6 inches. The pixel dimensions depend on the print resolution target.
A photo can have enough pixels and still crop badly if the shape is wrong. Match the 2:3 ratio before exporting.
Changing image metadata from 72 PPI to 300 PPI does not add detail. The file still needs enough real pixels.
Calculator
Calculate pixels and bleed
Enter any DPI to calculate the pixel dimensions for this physical size.
Workflow
How to resize a photo to 4x6
1. Open the image in the PixelMeasures Image Resizer. 2. Choose the 4 × 6 preset or enter 1200 × 1800 px for 300 PPI. 3. Use crop/fill if you want the image to fill the print. 4. Use fit/padding if you want to preserve the full image without cropping. 5. Export and check the preview before ordering prints.
Guidance
Does a 4x6 print crop my photo?
A 4 × 6 print uses a 2:3 aspect ratio. Many cameras capture images close to 2:3, so 4 × 6 usually crops less than 5 × 7 or 8 × 10.
If your source image is square, vertical social format, 16:9, or a phone screenshot, it will need cropping or borders to fit 4 × 6.
| Source image | Result on 4 × 6 |
|---|---|
| 2:3 photo | Fits cleanly |
| 4:5 portrait | Crops top/bottom or side depending orientation |
| 1:1 square | Needs crop or white borders |
| 16:9 screenshot | Needs crop or borders |
Details
Best export settings
Use these practical settings for a normal photo-lab order:
- Size: 1200 × 1800 px or larger
- Shape: 2:3
- Format: JPEG unless your lab requests another format
- Quality: high
- Avoid: enlarging very small images to 1200 × 1800 and expecting new detail
Related
Related pages and tools
Same branch
Nearby pages
FAQ
Common questions
What size is a 4x6 photo in pixels?
A 4 × 6 photo is 1200 × 1800 px at 300 PPI, 600 × 900 px at 150 PPI, and 2400 × 3600 px at 600 PPI.
What aspect ratio is a 4x6 photo?
A 4 × 6 photo uses a 2:3 aspect ratio.
Is 4x6 the standard photo size?
4 × 6 is one of the most common standard photo print sizes, especially for everyday snapshots and albums.
Can I print a phone photo as 4x6?
Yes, if the file has enough pixels and the crop works. Check the image shape first because some phone photos and screenshots do not match 2:3 exactly.
References
Sources and references
Photo print pixel values are calculated from physical inch dimensions and selected PPI/DPI. Adobe documentation is used for image size, resolution, and resampling concepts.
Last checked: 2026-05-03