Paper Size Differences: A4 vs Letter Size Explained

https://thea4vslettersizefocus.timeforchangecounselling.com/paper-size-differences-a4-vs-letter-size-explained

The main difference between A4 and Letter paper is their dimensions: A4 is slightly taller and narrower at 210 x 297 mm, while Letter is wider and shorter at 8.5 x 11 inches. This matters most when printing documents across regions, as A4 is standard worldwide except in North America. For example, a resume formatted for Letter might look cramped or oddly spaced on A4, and vice versa. Understanding this helps avoid layout headaches when sharing files internationally.