The A-series paper system (A0, A1, A2 … A10) is the most widely used international standard for printing, design, and documentation. It follows ISO 216 — where A0 starts at 1 m², and each smaller size is exactly half of the previous size.

This guide gives you a clean table, PDF, and PNG image you can directly use in your blog.

---

📝 What Makes A-Series Paper Special?

• Each size is a perfect half of the previous sheet (when cut parallel to its shorter side).
• A0 has an area of 1 square meter (1 m²).
• Aspect ratio is always 1 : √2 (1:1.4142) — meaning documents scale without distortion.
• Common uses: printing, books, documents, graphic design, architectural drawings.

---

📐 A-Series Paper Sizes Table (mm & inches)

Below is a clean and accurate size chart:

Paper Size	Width × Height (mm)	Width × Height (inches)
A0	841 × 1189 mm	33.11 × 46.81 in
A1	594 × 841 mm	23.39 × 33.11 in
A2	420 × 594 mm	16.54 × 23.39 in
A3	297 × 420 mm	11.69 × 16.54 in
A4	210 × 297 mm	8.27 × 11.69 in
A5	148 × 210 mm	5.83 × 8.27 in
A6	105 × 148 mm	4.13 × 5.83 in
A7	74 × 105 mm	2.91 × 4.13 in
A8	52 × 74 mm	2.05 × 2.91 in
A9	37 × 52 mm	1.46 × 2.05 in
A10	26 × 37 mm	1.02 × 1.46 in