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A3

A Series

Popular for drawings, diagrams, and small posters. Double the size of A4.

Physical Dimensions
Exact measurements in multiple units for precision printing and design
297 × 420 mm
11.69" × 16.54"
842 × 1190 pt

Used in desktop publishing software

70 × 99 pc

Traditional typography unit

29.7 × 42.0 cm

Metric system measurement

Digital Dimensions (Pixels)
Pixel dimensions for different DPI settings - essential for digital design and printing
72 DPI (Screen)

Standard screen resolution for web and digital display

842 × 1191 px
150 DPI (Draft Print)

Good quality printing for drafts and proofs

1754 × 2480 px
300 DPI (High Quality Print)

Professional printing standard for high-quality output

3508 × 4960 px
Common Applications
How and where A3 is typically used across different industries and contexts

Creative & Design

  • Small posters
Visual Scale
Relative size representation
A3297 × 420mm

Scaled representation (not actual size)

Quick Tools
Size ConverterAll Paper SizesTemplates
Related A Series
Other sizes in the same series
A0A1A2A4A5A6

Technical Standards

Series: A

Aspect Ratio: 1:√2 (1.414)

Standard: ISO 216

Origin: International (ISO)

✦ Features

A3 Paper Size Advantages

Discover the key advantages and applications of A3 paper size for your projects.

Perfect Dimensions

A3 measures 297 × 420 mm, ideal for professional applications.

International Standard

Part of the A series, A3 follows international standards for global compatibility.

Versatile Applications

Perfect for Drawings, Diagrams and many other professional uses.

Print Ready

Optimized for both digital display and high-quality printing with precise pixel dimensions.

Multiple Units

Available in millimeters, inches, and pixels - 11.69" × 16.54" in imperial units.

Universal Compatibility

Works seamlessly with all major design software, printers, and international standards.

FAQ

A3 Questions & Answers

Common questions about A3 paper size and its applications.

What are the exact dimensions of A3?

A3 measures exactly 297 × 420 millimeters or 11.69 × 16.54 inches.

What is A3 commonly used for?

A3 is commonly used for Drawings, Diagrams, Small posters among other applications.

What series does A3 belong to?

A3 belongs to the A series, which is part of international paper size standards.

What are the pixel dimensions of A3?

For digital use: 842 × 1191 pixels at 72 DPI, 3508 × 4960 pixels at 300 DPI for high-quality printing.

Can I use A3 for professional printing?

Yes, A3 is perfect for professional printing. It follows international standards and provides excellent print quality for business and creative applications.

Which design software supports A3?

A3 is supported by all major design software including Adobe Creative Suite, Figma, Sketch, Canva, and Microsoft Office applications.