What Is the Difference Between A4 and U.S. Sizes?
The most common paper size across the globe is DIN A4, which conforms to the international paper standard (ISO 216), adopted by all countries in the world except for the U.S. and Canada. A4 paper is narrower and longer (210 x 297 mm/8.27 x 11.69) than U.S. sized 8-1/2″ x 11 paper. U.S. sized paper will fit in A4 Binders, but A4 paper is too long to fit neatly in U.S.-sized Binders. If you are using A4 paper, you need A4 Binders.
