One of the most frequently searched questions for paper is the dimensions or size of it. There are two main sets of papers, the A-type, and the B-type.

In this article, we will focus on the A type, which is more common.

The A-Team

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*To obtain paper sizes in centimeters, convert mm values to cm by dividing by 10 and in feet by dividing inch values by 12.*

Stretch It Out a Bit

ISO 216 specifies tolerances for the production of A-series paper sizes as follows:

  • ±1.5 mm (0.06 in) for dimensions up to 150 mm (5.9 in)
  • ±2 mm (0.08 in) for lengths in the range 150 to 600 mm (5.9 to 23.6 in)
  • ±3 mm (0.12 in) for any dimension above 600 mm (23.6 in)


How in the World

The A series paper sizes are now in common use throughout the world apart from in the US, Canada, and parts of Mexico. The A4 size has become the standard business letter size in English-speaking countries such as Australia, New Zealand, and the UK, that formerly used British Imperial sizes. In Europe, the A paper sizes were adopted as the formal standard in the mid 20th century and from there they spread across the globe.

o₂.lk has a wide range of option for you, whether you go with white or colour photocopy paper! Be sure to check them out, and see what works for you. If you have any questions, feel free to contact us!

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