Print Resolution
Print Sizes in Pixels: 4×6, 5×7, 8×10, A4 and More (Chart)
To print at 300 pixels per inch (PPI), multiply each side in inches by 300. A 4 × 6 in print needs 1200 × 1800 pixels, an 8 × 10 in print needs 2400 × 3000, and A4 needs 2480 × 3508. The chart below lists the common sizes at 300 and 150 PPI.
By Ratilio Editorial Team · Published
Print sizes in pixels chart
| Print size | Pixels at 300 PPI | Pixels at 150 PPI | Aspect ratio |
|---|---|---|---|
| 4 × 6 in | 1200 × 1800 | 600 × 900 | 2:3 |
| 5 × 7 in | 1500 × 2100 | 750 × 1050 | 5:7 |
| 8 × 10 in | 2400 × 3000 | 1200 × 1500 | 4:5 |
| 11 × 14 in | 3300 × 4200 | 1650 × 2100 | 11:14 |
| A5 (148 × 210 mm) | 1748 × 2480 | 874 × 1240 | ≈ 1:√2 |
| A4 (210 × 297 mm) | 2480 × 3508 | 1240 × 1754 | ≈ 1:√2 |
| A3 (297 × 420 mm) | 3508 × 4961 | 1754 × 2480 | ≈ 1:√2 |
A-series pixel sizes are worked out from the standard millimetre dimensions and rounded to the nearest whole pixel. For example, A4 at 300 PPI is 297 ÷ 25.4 × 300 = 3507.87, which rounds to 3508. You may see 4960 for A3 elsewhere; that comes from cutting off the decimals instead of rounding 4960.63.
How to read the chart
Each entry is width × height in pixels, in portrait orientation. For a landscape print, swap the two numbers: a landscape 4 × 6 in print at 300 PPI is 1800 × 1200 pixels.
The pixels you need depend on two things only: the physical size of the print and the PPI you're aiming for. Double the PPI and you need twice as many pixels along each side.
Why 300 PPI and 150 PPI?
300 PPI is a common reference for detailed prints viewed up close, such as photos. It is a recommendation, not a universal requirement. 150 PPI can be acceptable in some situations, for example larger prints seen from further away. Printful, for instance, recommends 300 DPI for posters and gives 150–300 DPI as its recommended range for larger prints. Always check what your print service asks for.
PPI here means image pixels per printed inch. A printer's DPI, the number of ink dots it lays down, is a separate measurement. If you want the full picture, read DPI vs PPI explained.
Aspect ratios and cropping
Print sizes don't all share the same shape. 4 × 6 is 2:3, 8 × 10 is 4:5, and A-series paper is close to 1:√2 (about 1:1.414). An image only fills a print exactly when the shapes match.
When the shapes differ, you can crop the image to the print's shape, or add a border (padding) to keep the whole composition. To work out matching dimensions, use the Aspect Ratio Calculator.
What if your image has fewer pixels?
Divide each side of your image by the print size in inches. The result is the PPI you'd get at that size.
If the PPI comes out lower than you'd like, you have three options:
- Print at a lower PPI if the print will be viewed from a distance or your print service accepts it.
- Choose a smaller print. The same pixels spread over fewer inches give a higher PPI.
- Upscale carefully. Resampling creates extra pixels, but it can't recover detail that was never captured, so results vary.
Fact
No PPI figure guarantees a good print on its own. Viewing distance, the image itself and the printer all play a part.
How to calculate pixels for custom print sizes
Going the other way, from pixels to physical size, is quicker with a tool. To convert a single dimension at any resolution, use Pixels to Inches.
Print Size CalculatorEnter your image's pixel dimensions and a resolution to see how large it will print.Key takeaways
- Pixels needed = print size × PPI. At 300 PPI, 4 × 6 in is 1200 × 1800 and A4 is 2480 × 3508.
- The chart is portrait; swap width and height for landscape.
- 300 PPI is a common reference for close viewing, not a rule; 150 PPI can work in some cases.
- Print sizes have different shapes, so check the aspect ratio and crop or pad when it doesn't match.
- Changing the stored PPI doesn't add pixels, and upscaling can't recover missing detail.
Sources
Sources checked October 8, 2026