Print size calculator
Convert millimetres, inches and pixels at any DPI, see the image size a card needs with its bleed, and how many cards fit a sheet of Letter, A4 or A3. Free, in your browser, with no sign-up.
- No account
- Your files stay in your browser
- Free for commercial games too
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Questions
How do I convert millimetres to pixels?
Divide by 25.4 to get inches, then multiply by the DPI (dots per inch). At 300 DPI, 63.5 mm is 2.5 in, or 750 px. The calculator rounds pixels to whole numbers, since an image can’t have part of one.
What size should my card image be?
The card’s cut size plus the bleed on every side, at the DPI you print at. A poker card is 63.5 × 88.9 mm; with a 3 mm bleed the art is 69.5 × 94.9 mm, or 821 × 1121 px at 300 DPI.
Which DPI should I use?
300 DPI is the usual choice for print and what most print-on-demand services ask for. 150 DPI is fine for quick home prototypes, 600 DPI for very fine line art, and 72 DPI is only for screens.
How many cards fit on a sheet?
Nine poker cards fit on Letter or A4, laid out as the Decklab PDF export does: 6 mm margins, no gaps, the grid centred, and the orientation that fits the most. Printing the bleed round each card makes them bigger, so fewer may fit; the calculator shows both.
Are these the numbers the Decklab app uses?
Yes. Conversions use the app’s own units and the sheet counts come from its PDF export’s imposition, so a deck in Decklab prints on the number of sheets shown here.
Related tools
- Card size guide and blank templatesPoker, bridge, tarot, mini, square and more card sizes, with tokens, hex tiles and game boards: trim, bleed and safe zone in mm, inches and pixels at 300 DPI, and a free blank template for each, as a PNG with guides or a printable PDF sheet.
- Print-and-play PDF makerTurn your card images into a print-and-play PDF: pick the card size and paper, add cut marks and backs for double-sided or fold-and-glue printing, and set how many of each card. Free, in your browser, with no sign-up.
- Printer calibration pagePrint one Letter or A4 page with a 50 mm square, a poker card outline and rulers to check your printer prints cards at the right size, and learn how to fix it when it doesn’t. Free, in your browser, with no sign-up.
Making a whole game?
The Decklab editor keeps every card, token and board in one project, so a change reaches all of them.
See the editor