Pixel Converter

B Paper Sizes to Pixels

Convert ISO B-series paper sizes (B0 through B10) to pixel dimensions at any resolution. B4 is 945 × 1334px at 96 DPI.

All converters

96 DPI for screen, 150–300 for print.

B4 at 96 DPI

945 × 1334px

Formula

px = (mm ÷ 25.4) × DPI, per dimension (default DPI 96)

B series at 96 DPI

Every B-series size in pixels at the current resolution.

Sizemmpixels
B01000 × 14143780 × 5344
B1707 × 10002672 × 3780
B2500 × 7071890 × 2672
B3353 × 5001334 × 1890
B4250 × 353945 × 1334
B5176 × 250665 × 945
B6125 × 176472 × 665
B788 × 125333 × 472
B862 × 88234 × 333
B944 × 62166 × 234
B1031 × 44117 × 166

About the B Paper Sizes to Pixels conversion

The ISO 216 B series sits between the A sizes, giving intermediate dimensions used for posters, books, envelopes, and passports. B0 is 1000 × 1414mm, and each subsequent size halves the area.

Pixel dimensions come from converting each millimetre measurement through inches at your DPI: px = (mm / 25.4) × DPI. At 96 DPI, B4 (250 × 353mm) becomes 945 × 1334px; at 300 DPI it becomes 2953 × 4169px.

Choose a B size and resolution to read its exact pixel width and height, with the full B-series table shown alongside for quick reference when building templates and canvases.

Related converters

px to emem to pxpx to remrem to pxpx to ptpt to px

B Paper Sizes to Pixels FAQs

B4 is 250 × 353mm. At the 96 DPI screen reference that is 945 × 1334px; at 300 DPI it is 2953 × 4169px.
Each millimetre dimension is divided by 25.4 to get inches, then multiplied by the DPI: px = (mm / 25.4) × DPI for width and height.
B sizes are larger than the A size of the same number and sit between consecutive A sizes. B4, for example, is larger than A4 but smaller than A3. Both series share the √2 aspect ratio.
Use 300 DPI for print quality and 96 DPI for on-screen pixels. Set the DPI field to match your output.