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A4 Paper Size vs. A6 Paper Size: What's the Difference?

Edited by Aimie Carlson || By Harlon Moss || Published on January 29, 2024
A4 paper size is 210 x 297 mm, standard for documents, while A6 is 105 x 148 mm, often used for postcards.

Key Differences

A4 paper size, measuring 210 x 297 mm, is widely used for business documents, academic papers, and printing. A6 paper size, half the size of A4, measures 105 x 148 mm, making it suitable for postcards and small leaflets.
The A4 size is part of the ISO 216 standard, commonly used in most countries except the US. A6, also conforming to ISO 216, is less common but ideal for invitations and booklets.
A4 papers are typically used in printers and copiers, being the standard paper size for office and educational use. A6 papers, with their smaller size, are preferred for personal, promotional, or creative printing.
In terms of versatility, A4 is more flexible, suitable for both text-heavy documents and images. A6, due to its compact size, is often used for concise content or high-impact visuals.
A4 paper is commonly found in everyday stationery and is often the default setting in printing software. A6 paper, though less prevalent, is a popular choice for greeting cards and personal notes.

Comparison Chart


210 x 297 mm
105 x 148 mm

Common Uses

Documents, academic papers
Postcards, invitations

ISO Standard

Part of ISO 216 standard
Also part of ISO 216

Printing Compatibility

Standard for printers and copiers
Used for specific purposes

Content Suitability

Versatile for text and images
Ideal for concise content

A4 Paper Size and A6 Paper Size Definitions

A4 Paper Size

Ideal for detailed documents and large printouts.
The architectural plans should be printed on A4 paper for clarity.

A6 Paper Size

A6 is suitable for compact and portable printed materials.
The pocket guidebook is printed in A6 for convenience.

A4 Paper Size

A4 is often the default setting in printing and formatting software.
Make sure the page layout is set to A4 before printing.

A6 Paper Size

A6 offers a balance of space for creativity in a compact format.
The artist created a series of illustrations on A6 sheets.

A4 Paper Size

It's the most common paper size for office and academic use.
All our office printers are loaded with A4 size paper.

A6 Paper Size

A6 paper size is a smaller format measuring 105 x 148 mm.
I printed the party invitations on A6 paper.

A4 Paper Size

A4 size is widely recognized and used globally, except in North America.
We need to convert this document to letter size from A4 for our US office.

A6 Paper Size

It's commonly used for postcards and personal stationery.
Our holiday cards are all printed in A6 size.

A4 Paper Size

A4 paper size is a standard document size of 210 x 297 mm.
Please print the report on A4 paper size.

A6 Paper Size

It's ideal for concise messaging or promotional materials.
We're using A6 flyers for the marketing campaign.


What is A6 paper size?

A6 is a smaller paper size, measuring 105 x 148 mm.

What is A4 paper size?

A4 is a standard paper size, measuring 210 x 297 mm.

Where is A4 size commonly used?

In offices, schools, and for standard printing globally.

Is A4 size suitable for official documents?

Yes, it's the preferred size for most official documents.

Can I use A6 size for greeting cards?

Yes, it's a popular choice for greeting cards.

What are typical uses of A6 size?

For postcards, invitations, and small leaflets.

Is A4 size the same as letter size?

No, letter size is slightly different, mainly used in North America.

Can A6 size be used for professional purposes?

Yes, particularly for promotional and creative materials.

Can I print photos on A4 size?

Yes, A4 is suitable for photo printing.

Are A4 and A6 sizes part of a standard series?

Yes, both are part of the ISO 216 standard series.

Is A6 a good choice for flyers?

Yes, for compact and impactful flyers.

Can I create posters with A6 size?

A6 is small for posters; larger sizes are preferable.

Is A6 too small for regular printing?

It depends on the content; A6 is smaller than standard sizes.

Can I make booklets with A6 size?

Absolutely, it's ideal for small booklets.

Do printers support A6 size printing?

Many printers do, but check your printer's specifications.

How do I set my printer to A4 size?

Select A4 as the paper size in your printer settings.

Are A4 and A6 sizes available globally?

Yes, though availability may vary in some regions.

Is A4 good for academic papers?

Yes, it's commonly used in academia.

Can I use A6 for business cards?

It's larger than standard business cards but can be used creatively.

How do I format a document for A4 size?

Set your document's page size to 210 x 297 mm.
About Author
Written by
Harlon Moss
Harlon is a seasoned quality moderator and accomplished content writer for Difference Wiki. An alumnus of the prestigious University of California, he earned his degree in Computer Science. Leveraging his academic background, Harlon brings a meticulous and informed perspective to his work, ensuring content accuracy and excellence.
Edited by
Aimie Carlson
Aimie Carlson, holding a master's degree in English literature, is a fervent English language enthusiast. She lends her writing talents to Difference Wiki, a prominent website that specializes in comparisons, offering readers insightful analyses that both captivate and inform.

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