A-Series Paper Converter
Calculate dimensions for A0, A1, A2, A3, A4, and other ISO 216 sizes in mm and inches.
ISO 216 A-Series Chart
A-series paper sizes are defined by the ISO 216 international standard. Each size is half the area of the previous size.
Aspect Ratio
All A-series paper has an aspect ratio of **1:√2** (approx 1:1.41). This maintain proportions when folding paper in half to create the next size down.
Fun Fact
An **A0** sheet has an area of exactly **one square meter**. Each subsequent size halves the area while keeping the same shape.
ISO 216 A-Series Paper Sizes
Calculate dimensions for A-series paper from A0 to A10 in millimeters, centimeters, and inches.
Select Size
Choose an A-series size like A4 or A3.
View Dimensions
Instantly see width and height in various units.
Frequently Asked Questions
All A-series paper sizes have an aspect ratio of 1:√2 (approx 1:1.414).
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