A5 Paper Size Guide

The A5 paper is the sixth size of the A series, defined by the international standard ISO 216:2007. A5 paper has an area of 1/16 square metre, with dimensions of 148 mm × 210 mm (5.8 in × 8.3 in).

Visual Size Comparison

A5 paper dimensions

Width: 148 mm (5.8 inches)
Height: 210 mm (8.3 inches)
Area: 1/16 square metre (0.03125 m²)
Aspect ratio: 1:√2 (1:1.4142)

Paper Dimensions Overview

Format	Width x Height (mm)	Width x Height (in)	Size Guide
A0	841 x 1189	33.1 x 46.8	A0 Size Guide
A1	594 x 841	23.4 x 33.1	A1 Size Guide
A2	420 x 594	16.5 x 23.4	A2 Size Guide
A3	297 x 420	11.7 x 16.5	A3 Size Guide
A4	210 x 297	8.3 x 11.7	A4 Size Guide
A5	148 x 210	5.8 x 8.3	A5 Size Guide
A6	105 x 148	4.1 x 5.8	A6 Size Guide
A7	74 x 105	2.9 x 4.1	A7 Size Guide

The A series uses an aspect ratio of 1:√2, which means folding an A5 sheet in half creates two A6 sheets, and so on. This unique property allows for easy scaling without losing proportion.

Common uses of A5 paper

Notebooks and journals
Flyers and leaflets
Greeting cards
Small paperback books
Promotional booklets

Printing with A5

A5 is a versatile size that can be printed on most home and office printers. When preparing files for A5 printing, ensure your design software is set to the correct dimensions and use appropriate margins for your content. For double-sided printing, consider the paper's opacity to prevent text from showing through.

Frequently asked questions

What is the ISO 216 standard?

ISO 216 is the international standard that defines the A and B series of paper sizes, including A0 to A10. It's based on the German DIN 476 standard from 1922.

How are A series paper sizes related?

Each A size is half of the size of the previous one. For example, A1 is half of A0, A2 is half of A1, and so on. They all maintain the same aspect ratio of 1:√2.