what is a4 size

A4 size paper measures 8.27 x 11.69 inches, which is slightly larger than the U.S. letter size of 8.5 x 11 inches. It is defined by the ISO 216 standard and is the most widely used paper size in Europe and Asia. The dimensions of A4 paper are 21 x 29.7 cm or 210 x 297 mm. A4 is used for printing letters, documents, faxes, magazine pages, and more. It is commonly found in offices and is used for everyday printing for everything from Word documents to stationery letterheads. A4 is also used for creating magazines, posters, menus, flyers, calendars, notepads, and reports. It is the standard paper size in most countries, excluding North America and Canada, and is used in a variety of different industries.