The international paper size system, also known as ISO 216, includes the A, B, C, and DL series. The A series is most commonly used; the B series offers sizes in between those of the A series; the C series provides envelopes for the A series; and the DL series are for envelopes and marketing collateral.
Another paper size standard is the North American sizes, which was developed by the American National Standards Institute (ANSI), and is most widely used in the United States, Canada, and Mexico.
With Canva, use your creative freedom to push the boundaries of paper conventions and dimensions. Keep in mind that when it comes to creating good, effective, and efficient design, size matters.