Polotno

Print converter

Pixels to millimeters converter

Two-way pixel ↔ mm conversion with DPI awareness, A-series paper sizes, EU/JP business cards, and photo prints. Free, no signup, fully client-side.

Quick answer

At 300 DPI (print), 1 pixel ≈ 0.085 mm. At 96 DPI (screen), 1 pixel ≈ 0.265 mm.

Formula: mm = (pixels ÷ DPI) × 25.4

Quick convert

Screen rendering is typically 96 DPI. Print presets: 150 (draft), 300 (standard), 600 (high quality).

Sizing a 2-D canvas? Open the canvas calculator with print-quality check

Quick picks

Width

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Height

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300 DPI is the print standard. Pick 96 for screen-only output, 150 for large-format work, 600 for fine offset.

Print quality at this canvas size

Sharp print

If printed at this size: 300 DPI — exceeds the 300 DPI print standard.

Or check an image →

Drop an image to see the largest sharp print size at 300 DPI. Files never leave your browser.

Drag an image here

or click to choose a file (PNG, JPEG, WebP, SVG)

Pick the right DPI

  • 300 DPI — print standard. ≈ 11.81 px per mm.
  • 150 DPI — large-format banners and backdrops viewed from a distance. ≈ 5.91 px per mm.
  • 600 DPI — fine offset and gallery proofs. ≈ 23.62 px per mm.

Common pixel canvases — physical print size

Pixel canvasmm @ 300 DPImm @ 96 DPI
1004 × 650 px85 × 55 (EU business card)266 × 172
1075 × 650 px91 × 55 (JP business card)284 × 172
1080 × 1920 px91.4 × 162.6 (small flyer)285.8 × 508
1181 × 1772 px100 × 150 (10 × 15 cm photo)312.5 × 469
1240 × 1748 px105 × 148 (A6)328 × 462.5
1748 × 2480 px148 × 210 (A5)462.5 × 656
2480 × 3508 px210 × 297 (A4)656 × 928
3508 × 4961 px297 × 420 (A3)928 × 1313

Frequently asked questions

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