A4 paper size (ISO 216)

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A4 paper size - 210 × 297 mm
A4 paper dimensions: 210 × 297 mm (8.27 × 11.69 in)

A4 paper measures 210 × 297 mm (8.27 × 11.69 in). [source] The aspect ratio is 1:√2 (≈1.414), defined by ISO 216. [source]

A4 paper dimensions
PropertyValue
StandardISO 216 [source]
Width210 mm (8.27 in) [source]
Height297 mm (11.69 in) [source]
Aspect ratio1:√2 (≈1.414)

Source: ISO 216.

FAQ

What are A4 paper dimensions?

A4 measures 210 × 297 mm (8.27 × 11.69 in).

What is the A4 aspect ratio?

1:√2 (≈1.414).

Which standard defines A4?

ISO 216.