A3 Size in mm, cm and inches
A3 measures 297 × 420 mm — that is 29.7 × 42 cm or 11.69 × 16.54 inches. At 300 DPI it is 3508 × 4961 pixels.
A3 Dimensions Table
| Unit | Width | Height |
|---|---|---|
| Millimetres (mm) | 297 mm | 420 mm |
| Centimetres (cm) | 29.7 cm | 42 cm |
| Inches (in) | 11.69 in | 16.54 in |
| Points (pt) | 842 pt | 1191 pt |
| Pixels @72 DPI | 842 px | 1191 px |
| Pixels @150 DPI | 1754 px | 2480 px |
| Pixels @300 DPI | 3508 px | 4961 px |
About A Series (ISO 216)
The international A series — the everyday standard for documents, posters and books across India and most of the world. Each size is half the previous one.
A series sizes are used for documents, letters, forms, books, and posters worldwide, with A4 being the everyday office and printing standard.
Frequently asked questions
- What is A3 in cm?
- A3 is 29.7 × 42 cm.
- What is A3 in inches?
- A3 is 11.69 × 16.54 inches.
- What is A3 in pixels at 300 DPI?
- A3 at 300 DPI is 3508 × 4961 pixels.
Related A Series (ISO 216) Sizes
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