Print size to pixels
Turn a target physical size and pixel density into whole-pixel dimensions for a new document or export.
Did this calculator give you what you needed?
What could be better?
Physical size multiplied by density
Dimensions are converted to inches, multiplied by PPI and rounded to the nearest whole pixel. The result is the target canvas size before bleed or printer-specific adjustments.
Rounding is unavoidable
Pixels are discrete. A metric size can produce a fractional pixel count after conversion, so the displayed width and height are rounded independently.
The document sizes people ask for most
At 300 PPI, A4 comes out at 2480 by 3508 pixels and US Letter at 2550 by 3300. A US business card of 3.5 by 2 inches is 1050 by 600, and A6 postcard stock is 1240 by 1748. Those four cover a large share of everyday print work.
Each of those is the trim size, meaning the paper after it has been cut. If any colour or image is meant to run to the very edge, the artwork has to be larger than the trim, which is what the bleed calculator adds.
Frequently asked questions
What size in pixels is A4 at 300 PPI?
2480 by 3508. A4 is 210 by 297 mm, which is 8.27 by 11.69 inches, and multiplying by 300 gives those figures after rounding. At 150 PPI it halves to 1240 by 1754, and at 600 PPI it doubles to 4961 by 7016.
Do I add the bleed before or after this calculation?
Add it to the physical size first, then convert. Working the other way round means adding pixels to a rounded number and the edges drift. The bleed size calculator does both steps in order: it extends the trim size on all four edges and converts the result.
Is a bigger canvas always safer?
No, and it costs you twice. Doubling the resolution quadruples the pixels, which slows every edit and inflates the upload, while the press cannot resolve the extra detail anyway. Build at the resolution the printer asks for. If nobody has told you, 300 PPI at final size is the safe default for small-format work.
What about logos and type?
Keep them vector wherever the workflow allows. A logo placed as PDF, SVG or EPS prints at the device’s own resolution rather than at your document’s, so it stays crisp at any size. This calculation is for the raster parts of the job, the photographs and textures.
Why are the width and height rounded separately?
Because each axis is converted on its own, and a metric size rarely lands on a whole pixel. Rounding both to the nearest pixel keeps each edge within half a pixel of correct, which is far below anything a press can reproduce, but it does mean the ratio can shift imperceptibly from the exact paper proportions.