Which Countries Use Letter Size Paper? Key Differences Explained
Discover which countries use letter size paper (8.5 x 11 inches) and why it's different from A4 paper used globally.
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The United States and Canada primarily use letter size paper, which measures 8.5 x 11 inches. This standard is distinct from the A4 size used in most other countries, which measures 210 x 297 mm. Institutions and businesses in these countries often require documents to be formatted for letter size, making it the default paper size for a vast range of printing and writing tasks.
FAQs & Answers
- What is the difference between letter size and A4 paper? Letter size paper measures 8.5 x 11 inches (215.9 x 279.4 mm), primarily used in the US and Canada, while A4 paper is 210 x 297 mm and used in most other countries.
- Why do the US and Canada use letter size paper? The US and Canada adopted letter size paper based on traditional standards developed during early industrial printing and writing practices, differing from the international ISO standard using A4.
- Which countries use A4 paper instead of letter size? Most countries outside North America, including European, Asian, African, and South American nations, primarily use A4 paper as their standard document size.