What DPI Do You Need to Print a Photo?

The short answer

Aim for 300 dpi for a print that's crisp at any viewing distance. Anywhere from 150 to 300 dpi still prints well, with softness visible only if you put your nose to it. Below 150 dpi a print looks soft and disappointing, so we block those sizes rather than sell you one. Everything below explains how to land in the right band.

What DPI and PPI actually mean

DPI (dots per inch) is how many pixels of your photo land in each printed inch. PPI (pixels per inch) is the same idea — most people use the two terms interchangeably for photos, and we will here too. The key point is that DPI is not a fixed property of your file. It changes the moment you choose a print size.

A photo has a fixed number of pixels. Print it small and those pixels pack tightly together, giving a high DPI and a sharp result. Print the same file large and the pixels spread out, the DPI drops, and detail starts to soften. So "what DPI do I need" really means "how big can I print this photo before it goes soft".

How DPI relates to print size

Work out the DPI for any size by dividing the photo's pixel width by the print's width in inches. A 6000-pixel-wide photo printed 20 inches wide gives 300 dpi. Print that same file 40 inches wide and you halve it to 150 dpi — still acceptable, but the floor. Push to 60 inches and you drop to 100 dpi, which we won't allow.

This is why the same photo can be gallery-grade at A4 and blocked at A1. Nothing about the file changed; only the size you asked for did. The fix is always one of two things: print smaller, or start with a photo that has more pixels.

How big can I print my photo?

Megapixels tell you how many pixels a camera captured, and that sets a sensible ceiling on print size. The table below is honest guidance, not a hard rulebook — exact limits depend on your photo's precise pixel dimensions and how closely the piece will be viewed. Treat these as comfortable maximums at good quality.

Camera	Comfortable at 300 dpi	Acceptable down to 150 dpi
12 MP (typical phone)	around A4	around A3, often A2
24 MP (mirrorless / DSLR)	around A3	around A2 and 50×70 cm
48 MP (recent phone / camera)	around A2	around A1 and larger

Bear in mind a "48 MP" phone often saves a 12 MP file by default, and heavy cropping throws pixels away. Rather than guess, upload your photo — we measure the actual pixels and tell you the exact sharpness for every single size.

Does canvas need less resolution than a poster?

A little, yes. Canvas is usually hung and viewed from further back, and its woven texture scatters light in a way that hides minor softness. A poster or sharp photo print on smooth paper shows every pixel, so it's the least forgiving surface. Framed prints sit somewhere in between.

We don't bend the numbers for this, though. The same 150 dpi floor applies across canvas, paper and framed prints. The forgiveness of canvas simply means a borderline file is more likely to look pleasing on it — not that we'll wave through something genuinely too small.

Can I just upscale a small photo?

Upscaling software can enlarge a file's pixel count, and modern AI tools do it surprisingly well on simple subjects. But it can't invent detail that the camera never captured. Fine textures, distant stars and crisp edges tend to turn waxy or smeared when pushed hard.

Use upscaling for a gentle lift — say to clear the 150 dpi floor on a size you're close to — and judge the result honestly at full magnification. As a rule, a well-shot original beats an aggressively upscaled small one every time. If you're starting from scratch, our art generator produces files already sized for large prints.

How /print measures and blocks soft sizes

When you upload, we read your photo's true pixel dimensions and calculate the DPI for every size we offer. Each size is then graded: 300 dpi and above is gallery-grade, 150 to 300 prints well, and anything under 150 is marked too soft and switched off. You see all of this before you pay.

Plenty of services print whatever you send and let you discover the softness when the parcel arrives. We do the opposite, and the same check runs again at checkout so nothing slips through. You only ever pay for a size that does your photo justice. Upload your photo to see your grades.