What is the size of a4 in centimeters?

A4 paper size is 21 cm x 29.7 cm and is part of the international standard paper sizes (ISO 216) with a ratio of 1:√2 and is commonly used in office and printing.

A4 paper size: 21 cm x 29.7 cm

A4 paper is an international standard paper size commonly used For office documents, printer paper and notebooks. Its dimensions are:

• Length: 29.7 cm
• Width: 21 cm

A4 paper is part of the A series of paper sizes, which are Based on international paper size standard (ISO 216). The ratio of A series paper sizes is 1:√2, which means that if you fold an A series paper in half diagonally, you can get two sheets of the same size, and the ratio is still 1:√2.

A4 paper is a commonly used size in office and printing because it provides reasonable page size and manageability. It's large enough to hold large amounts of text and graphics, yet small enough to store easily in standard filing cabinets and folders.

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