Format profile / B3
B3
353 × 500 mm · 13.9 × 19.69 in
Width
353 mm
Height
500 mm
Area
1,765 cm²
Finished-size ledger
Pixel canvas by resolution
rounded to whole pixelsBleed and safe-area canvases
confirm with your printer3 mm on every edge
359 × 506 mm
Artwork canvas with bleed. Keep essential content inside roughly 347 × 494 mm if the same distance is also used as a simple safety margin.
5 mm on every edge
363 × 510 mm
Artwork canvas with bleed. Keep essential content inside roughly 343 × 490 mm if the same distance is also used as a simple safety margin.
Closest standard formats
both edges comparedWhere B3 fits
2 common usesNext in the ISO B drawer
larger / smallerSet up B3 artwork without guessing
Start the document at the finished size—353 × 500 mm—and add the bleed your printer specifies outside that edge. A common 3 mm bleed produces a 359 × 506 mm artwork canvas. Keep type, logos, folds, and other critical details inside the trim line; a safety margin is not the same thing as bleed.
Pixel dimensions only become meaningful when paired with a resolution. At 300 DPI, this format is 4,170 × 5,907 pixels. Changing that number in an export dialog without resampling does not add image detail—it only changes the declared physical scale.
B3 belongs to ISO B Series. Its proportion is 1:1.414 (√2); the √2 family is designed so a half-sheet keeps the same shape, which makes layouts easier to scale between related formats.