A6 Paper Size Guide
A6 is a compact paper size commonly used for postcards, small flyers, invitations and promotional cards. It is part of the international ISO A-series paper system and is widely used for printed materials that need to be portable and easy to distribute.
In this guide we explain the A6 paper dimensions, how A6 compares to other A-series sizes, and the most common uses for A6 in printing and design.
For a full overview of standard paper formats, see our paper size guide.
What Size Is A6 Paper?
The dimensions of A6 paper are:
105 × 148 mm
10.5 × 14.8 cm
4.1 × 5.8 inches
A6 is exactly half the size of A5, and double the size of A7.
The A-series paper system works by halving each sheet while keeping the same proportions.
For example:
A4 → A5
A5 → A6
A6 → A7
You can explore the neighbouring sizes in our guides to A5 paper size and A4 paper size.
A6 Paper Size in Different Units
A6 paper can be measured in several units depending on the software or printing process being used.
| Unit | Dimensions |
| Millimetres | 105 × 148 mm |
| Centimetres | 10.5 × 14.8 cm |
| Inches | 4.1 × 5.8 in |
Using the correct dimensions when preparing artwork helps ensure your design prints accurately.
A6 Paper Size Compared to Other A-Series Sizes
All A-series paper sizes follow the same proportions, allowing designs to scale easily between formats.
| Paper Size | Dimension (mm) | Dimension (inches) | Typical Uses |
| A0 | 841 × 1189 mm | 33.1 × 46.8 in | Large posters, architectural drawings |
| A1 | 594 × 841 mm | 23.4 × 33.1 in | Posters, technical drawings |
| A2 | 420 × 594 mm | 16.5 × 23.4 in | Posters, calendars |
| A3 | 297 × 420 mm | 11.7 × 16.5 in | Posters, menus, presentations |
| A4 | 210 × 297 mm | 8.27 × 11.7 in | Documents, flyers, brochures |
| A5 | 148 × 210 mm | 5.8 × 8.3 in | Leaflets, booklets, invitations |
| A6 | 105 × 148 mm | 4.1 × 5.8 in | Postcards, small flyers |
Because each size halves in sequence, a design created for A6 can easily be scaled up to A5 or A4 without altering its layout.
For a complete overview of A-series paper sizes, see our paper size guide.
What Is A6 Paper Used For?
A6 is commonly used for small printed materials where portability and convenience are important.
Typical uses include:
- Postcards
- Small promotional flyers
- Event invitations
- Greeting cards
- Loyalty cards
- Mini marketing handouts
Because A6 is compact and easy to distribute, it is widely used for promotional materials and direct marketing campaigns.
For larger marketing materials such as leaflets and brochures, sizes like A5 and A4 are more common.
A6 Paper Size in Printing
In commercial printing, A6 is often used for postcards and small promotional cards.
Designers frequently produce A6 designs by dividing larger sheets during the printing process. For example, multiple A6 designs can be arranged on a larger sheet before being trimmed down to the final size.
When preparing artwork for A6 printing, remember to include bleed if your design runs to the edge of the page and keep important content within safe margins.
You can learn more about paper thickness and printing materials in our what Is GSM paper guide.
A6 Paper Size in Inches
Although the ISO paper system uses millimetres, many designers also refer to paper sizes in inches.
A6 measures - 4.1 × 5.8 inches
This makes it significantly smaller than A5, but still large enough for postcards and promotional materials.
Paper Size vs Paper Weight
Paper size refers to the dimensions of the sheet, while paper weight describes how thick or rigid the paper feels.
Paper weight is measured in GSM (grams per square metre).
Typical examples include:
80gsm - Standard office paper
170gsm - Typical flyer weight
250–350gsm - Used for postcards and lower quality business cards
400–800gsm - Used for high quality business cards
For a full explanation of paper thickness and printing materials, see our what Is GSM paper guide.
Frequently Asked Questions
What Size Is A6 Paper?
A6 paper measures 105 × 148 mm, 10.5 × 14.8 cm, or 4.1 × 5.8 inches.
Is A6 Half the Size of A5?
Yes. A6 is exactly half the size of A5 paper.
What Is A6 Paper Used For?
A6 is commonly used for postcards, invitations, small flyers and promotional handouts.
How Many A6 Sheets Fit Into A4?
Four A6 sheets fit into one A4 sheet.
Explore More Paper Size Guides
You can learn more about other standard paper sizes in our detailed guides:
Written by Zoey Gilbert
With more than a decade specialising in print, Zoey has developed expertise across analogue printing, film development, photographic printing and commercial print. Combining her passion for print with a flair for marketing and creative writing, Zoey writes about all things print.