A3 Paper Size Dimensions
A3 paper measures 297 × 420 millimeters.
A3 Paper Size Diagram
What Size Is A3 Paper?
A3 paper measures 297 × 420 mm, which is 29.7 × 42 cm or approximately 11.69 × 16.54 inches. A3 is a popular ISO 216 paper size used for drawings, posters, brochures, charts, and office documents.
A3 Paper Size Dimensions & Conversions
A3 Dimensions in Different Units
| Unit | Width | Height |
|---|---|---|
| Millimeters | 297 mm | 420 mm |
| Centimeters | 29.7 cm | 42 cm |
| Inches | 11.69 in | 16.54 in |
| Feet | 0.97 ft | 1.38 ft |
| Meters | 0.297 m | 0.42 m |
| Points | 842 pt | 1191 pt |
| Picas | 70.2 pc | 99.3 pc |
What Is A3 Paper Used For?
A3 is commonly used for small and medium-sized posters.
A3 provides space for technical drawings and diagrams.
The size is useful for brochures, menus, and promotional material.
A3 is used for spreadsheets, charts, and documents requiring more space than A4.