Paper sizes in pixels

ISO B paper sizes in pixels

Pixel dimensions for ISO B0–B10, calculated from the defining millimeters. ISO B is not the same as the Japanese JIS B series.

ISO B paper sizes in pixels · portrait width × height · nearest pixel
Format	72 DPI	96 DPI	150 DPI	300 DPI	600 DPI	Calculator
B01000 × 1414 mm	2835 × 4008	3780 × 5344	5906 × 8350	11811 × 16701	23622 × 33402	Open ↗
B1707 × 1000 mm	2004 × 2835	2672 × 3780	4175 × 5906	8350 × 11811	16701 × 23622	Open ↗
B2500 × 707 mm	1417 × 2004	1890 × 2672	2953 × 4175	5906 × 8350	11811 × 16701	Open ↗
B3353 × 500 mm	1001 × 1417	1334 × 1890	2085 × 2953	4169 × 5906	8339 × 11811	Open ↗
B4250 × 353 mm	709 × 1001	945 × 1334	1476 × 2085	2953 × 4169	5906 × 8339	Open ↗
B5176 × 250 mm	499 × 709	665 × 945	1039 × 1476	2079 × 2953	4157 × 5906	Open ↗
B6125 × 176 mm	354 × 499	472 × 665	738 × 1039	1476 × 2079	2953 × 4157	Open ↗
B788 × 125 mm	249 × 354	333 × 472	520 × 738	1039 × 1476	2079 × 2953	Open ↗
B862 × 88 mm	176 × 249	234 × 333	366 × 520	732 × 1039	1465 × 2079	Open ↗
B944 × 62 mm	125 × 176	166 × 234	260 × 366	520 × 732	1039 × 1465	Open ↗
B1031 × 44 mm	88 × 125	117 × 166	183 × 260	366 × 520	732 × 1039	Open ↗

Calculate a canvas with your own settings

Your dimensions

On your device

Start from a paper or photo size

Presets set the finished print size and unit. PPI and rounding remain your choice.

Print width

The desired finished width, before any bleed.

Print height

The desired finished height, before any bleed.

Size unit

Applies to both dimensions.

Target resolution PPI

Use your print provider’s requirement when available.

Pixel rounding

Nearest is a conventional approximation; round up meets at least the target PPI on both axes.

Use a decimal point, without commas. Physical lengths and PPI accept up to 4 decimal places.

Example result

2,079 × 2,953 pixels

176 × 250 mm at 300 PPI · nearest pixel

Total pixels: 6.139 MP
Width density: 300.0375 PPI
Height density: 300.0248 PPI

Illustrative geometry · proportions, not actual screen size

Nearest-pixel rounding can fall slightly below the target on one axis. Use Round up when the target is a strict minimum.

This is the canvas size. Changing a file’s PPI metadata alone does not create these pixels.

Calculation details & inputs

Inputs used for this result
Print width	176
Print height	250
Size unit	Millimeters (mm)
Target resolution	300 PPI
Pixel rounding	Nearest whole pixel

Result details · 6 decimals or 3 significant digits for tiny values
Required width (px)	2,079
Required height (px)	2,953
Exact width before rounding (px)	2,078.740157
Exact height before rounding (px)	2,952.755906
Effective width PPI	300.0375
Effective height PPI	300.0248

How these pixel sizes are calculated

ISO B sizes fall between neighboring A sizes and are often used for posters, books and passports. Japanese JIS B sizes share the names but not the dimensions, so confirm which B series your printer or publisher means. Values use nearest whole-pixel rounding in portrait orientation.

pixels = size in inches × DPI = (size in mm ÷ 25.4) × DPI

Open a row in the calculator to choose round-up instead of nearest rounding, change orientation or enter a custom density. Use the full paper reference to search all 51 formats and download a CSV.