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A4 sheet of paper: size, dimension and comparison

The adopted reference is about 29.7 cm.

length of the longer side

29.7 cm = 0.297 m. A centimeter is one hundredth of a meter.

1975 standardPublication of the ISO 216 standard

The format measures 210 by 297 millimetres.

Explore at this scale
A4 sheet of paper, interpreted illustration
Interpreted illustration · dimension stated in the fact sheet.

What does this number measure?

The format measures 210 by 297 millimetres. Displayed dimension: length of the longer side.

Compare the stated dimensions

The comparison uses the number in each fact sheet: altitude, height, diameter, length or distance, depending on the reference. Two values in metres do not necessarily describe the same property.

Compare with Watermelon in the explorer →

Source and limitations

Catalogue value to check against the source; not individually audited.

Complete white A4 sheet, longer side vertical.

Publication of the ISO 216 standard: 1975 standard. Proposed historical date; an existing documentary source is linked but was not consulted for this date in this session. Do not interpret this reference as the manufacturing date of the illustrated specimen. Date of the first edition of ISO 216, not the invention of paper or A4, which had already been used, notably in DIN 476.