Which Paper Size is Bigger: A3 or A3+? Dimensions & Uses Explained
Discover why A3+ is bigger than A3 and how their size differences affect printing and design projects.
Published
Video transcript
A3+ is bigger than A3. While A3 measures 297 x 420 mm, A3+ typically measures 329 x 483 mm. This extra size can be useful for printing with larger margins or offering more space for artwork or technical designs.
Questions and answers
What are the exact dimensions of A3 and A3+ paper?
A3 paper measures 297 x 420 mm, while A3+ typically measures 329 x 483 mm.
Why is A3+ paper used instead of A3?
A3+ offers extra space making it ideal for printing with larger margins or displaying more detailed artwork and technical designs.
Can an A3 printer print on A3+ paper?
Most standard A3 printers cannot accommodate the larger A3+ size, so a printer supporting A3+ dimensions is necessary.