FROM PIXELS TO PAPER
How large can you print it?
Find the right size for your photo. See what fits, what crops, and how much detail you have.
Your photo
Drop a JPG or PNG here
One image · up to 20 MB / 25 megapixels
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Your print
Your photo, at the size
you have in mind.
Choose a photo to compare its shape with the paper.
Your resolution
WATCH THE WALKTHROUGH · 48 SECONDS
How large can you print a photo?
A silent, captioned walkthrough using actual tool screenshots and our AI-generated sample photo. The explanation on this page covers the same steps.
ONE PHOTO. THREE DIFFERENT RESULTS.
What can a 1200 × 1800 photo print?
This portrait photo has a 2:3 shape. Changing the paper or placement changes how its pixels are used.
On a small screen, scroll the table sideways to compare all columns.
| Placement | Resolution | What happens | |
|---|---|---|---|
| 4 × 6 in | Whole photo | 300 PPI | Exact fit. No cropping or borders. |
| 8 × 10 in | Whole photo | 180 PPI | The image is 6.67 × 10 in, with side borders. |
| 8 × 10 in | Fill the paper | 150 PPI | About 16.7% of the image area is cropped from the top and bottom. |
PPI describes available pixels, not focus or print quality. Check your own photo above before ordering.
A USEFUL ESTIMATE
Pixels set the limit.
Paper sets the scale.
Pixels per inch (PPI) measures how tightly your image's pixels fit on paper. A larger print spreads the same pixels further apart.
What is a good result?
300 PPI is a useful target for detailed prints viewed close up. Between 150 and 299 PPI can work for many prints, especially at a distance. Below 150 PPI, fine detail is more limited. These are guidelines, not a print-quality guarantee.
Does this check sharpness or change the file?
No. We calculate from pixel dimensions and your chosen placement. Blur, compression, paper, printer settings and viewing distance also affect the result. Your original file stays unchanged.
Does the 72 DPI number in my file matter?
Embedded DPI is a suggested print instruction. This tool calculates the effective PPI at the size you choose, including any cropping. Changing a metadata number does not add image detail.
Where does my photo go?
It stays in this browser's memory. The tool does not upload your selected image. Google advertising and consent services make separate web requests and may use cookies; see our privacy policy. There are no user accounts. Refreshing clears the selected photo. The sample is an AI-generated product photo served by this site.
HOW IT WORKS
One division, nothing hidden
What the checker reads
When you choose a photo, the checker reads only its width and height in pixels. It does not look at what is in the picture, how large the file is, or the DPI number stored inside it, and it does not change or upload the file.
The formula
Effective PPI is the number of pixels divided by the inches they have to cover: PPI = pixels / inches. A photo 2,400 pixels wide printed 8 inches wide gives 2,400 / 8 = 300 PPI. Print the same photo 16 inches wide and you get 2,400 / 16 = 150 PPI. The pixels don't change; they are just spread over twice the distance.
You can also work backwards by multiplying. An 8 × 10 print at 300 PPI needs 2,400 × 3,000 pixels. At 150 PPI it needs 1,200 × 1,500 pixels.
Keep the whole photo or fill the paper
Photos and paper often have different shapes. Many cameras shoot in a 2:3 shape, while 8 × 10 paper is 4:5. The checker divides the photo's width in pixels by the paper's width, and its height by the paper's height, which gives two PPI numbers.
Keep the whole photo uses the larger of the two. The image shrinks until one side meets the paper's edge, the whole picture stays visible, and the leftover space becomes borders. Fill the paper uses the smaller of the two. The image grows until both edges of the paper are covered, so some of the photo extends past the edge and is cropped off. That's why filling the paper always gives the same or a lower PPI than keeping the whole photo. When the photo and the paper share a shape, both choices give the same answer and nothing is cropped.
What it can't judge
PPI counts pixels, not quality. A blurry, noisy or heavily compressed photo can have plenty of pixels and still print soft, and a sharp photo at 200 PPI can look better than a shaky one at 400. The checker can't see focus, motion blur, JPEG artifacts, color, or how a lab will handle your file. The DPI tag saved in the file (often 72) doesn't matter either: it is only a suggested size, and labs and printers work from the pixels you send.
THE SAMPLE PHOTO, CHECKED
What the tool shows for its own sample
The "Try a sample photo" button loads an AI-generated portrait image that is 1,024 × 1,536 pixels, a 2:3 shape. These are the results the tool gives for it, with the division behind each one.
On a small screen, scroll the table sideways to compare all columns.
| Placement | Resolution | How it's worked out | |
|---|---|---|---|
| 4 × 6 in | Fill the paper | 256 PPI | 1,024 / 4 = 256. Same 2:3 shape as the paper, so 0% is cropped. |
| 5 × 7 in | Whole photo | 219 PPI | 1,536 / 7 = 219.4. Narrow borders at the sides. |
| 8 × 10 in | Whole photo | 153 PPI | 1,536 / 10 = 153.6. The image covers 6.67 × 10 in, with borders at the sides. |
| 8 × 10 in | Fill the paper | 128 PPI | 1,024 / 8 = 128. The image becomes 8 × 12 in, so about 16.67% is cropped from the top and bottom. |
| Largest at 300 PPI | Whole photo | 300 PPI | 1,024 / 300 and 1,536 / 300 give up to 3.41 × 5.12 in. |
How to read it: a 4 × 6 print lands in the moderate band, close to the 300 PPI target, and nothing is lost to cropping. At 8 × 10, keeping the whole photo stays just inside the moderate band, but filling the paper drops it to 128 PPI, below 150, where fine detail is more limited. With this file, a 5 × 7 print or an 8 × 10 with borders keeps more detail per inch than a full-bleed 8 × 10.
The tool rounds PPI down to a whole number, so 153.6 shows as 153.
COMMON QUESTIONS
Before you order
a print
Short answers to the questions that come up most when choosing a print size. Each one uses the same pixels-divided-by-inches math as the checker above.
What PPI do I need for an 8 × 10 print?
For close viewing, aim for 300 PPI, which means a photo of at least 2,400 × 3,000 pixels (7.2 megapixels). At 150 PPI, the bottom of the moderate band, you need 1,200 × 1,500 pixels. If your photo isn't a 4:5 shape and you fill the paper, add pixels on the long side, because part of it will be cropped away.
Will my phone photo print well at 16 × 20?
A 12-megapixel phone photo is commonly 4,032 × 3,024 pixels. Held upright on 16 × 20 paper, keeping the whole photo gives 4,032 / 20 = about 201 PPI, with an image 15 × 20 in. Filling the paper gives 3,024 / 16 = 189 PPI, with about 6.25% cropped. Both are in the moderate band, which often works for a wall print seen from a few feet away. A 300 PPI 16 × 20 would need 4,800 × 6,000 pixels (28.8 megapixels). At this size, focus and noise show more, so look at the photo zoomed in first.
Why is my photo cropped at 8 × 10?
Because the shapes differ. 8 × 10 paper is 4:5, wider for its height than most photos. A 2:3 photo filling an 8 × 10 becomes 8 × 12 in, so about 16.7% of it is cut from the long sides. A 3:4 phone photo loses about 6.25%. To avoid it, choose "Keep the whole photo" and accept borders, crop the photo yourself so you choose what goes, or pick a paper that matches your photo's shape, such as 4 × 6 or 8 × 12 for a 2:3 photo.
Does upscaling a photo help it print bigger?
It raises the pixel count, so the PPI number goes up, but it doesn't recover detail the camera never captured. Basic resizing smooths pixels together, and AI upscalers predict texture that may not match the real scene. A modest upscale can soften jagged edges on a slightly-too-small file. If you upscale, check the result zoomed in before ordering, and remember that this checker will report the PPI of the larger file, not the detail of the original.
Is A4 the same shape as 8 × 10?
No. A4 is 210 × 297 mm, about 8.27 × 11.69 in, which is taller and narrower than 8 × 10. A 2:3 photo filling A4 loses about 5.7% of its area, much less than the roughly 16.7% it loses at 8 × 10. Choose the paper your printer or lab will actually use so the crop preview matches.