Compare

A3 vs B4

Compare:
A
A3

297 × 420 mm

With:
B
B4

250 × 353 mm

Compare A3 and B4

Sheets shown to the same proportional scale
Width of A3 vs B4
+47 mm
Height of A3 vs B4
+67 mm
Area of A3 vs B4
141.3%

Scale A3 to fit B4

84%

Reduced to 84%, A3 fits inside B4 without cropping. It fills B4 almost exactly, as both sheets share the same proportions.

Scale to match width
84.2%
Scale to match height
84%

What is the difference between A3 and B4?

The primary difference between A3 and B4 is that A3 is taller and wider (297 × 420 mm) compared to B4 (250 × 353 mm).

In terms of surface area, A3 is 41.3% larger than B4.

An A3 piece of paper measures 297 × 420 mm or 11.7 × 16.5 inches. Cutting it in half will create two A4 sheets of paper. A3 is part of the A series.

A B4 piece of paper measures 250 × 353 mm or 9.8 × 13.9 inches. Cutting it in half will create two B5 sheets of paper. B4 is part of the B series.

Popular comparisons