Paper sizes are an essential standard in printing, design, architecture, and everyday use. Among all global standards, the ISO 216 A series is the most widely adopted system compared to US paper sizes. The A series paper sizes provide a consistent and scalable format from large blueprints to compact notebooks. Let’s delve into everything you need to know about the A series.
Inhaltsverzeichnis
Definition: Paper size A series
The A series paper sizes are defined by the ISO 216 international standard. This system originated in Germany and is based on a simple principle:
- Each size is exactly half of the previous one when folded parallel to its shorter side
- All sizes maintain the same aspect ratio of 1:√2.
Dimensions
The most common paper sizes in the A series range from A0 (the largest) to A10 (the smallest). As this is a thorough guide, we have also listed special sizes in the table below.
| Format | Width × height (mm) | Width × height (in) |
| A0 | 841 × 1189 mm | 33.1 × 46.8 in |
| A1 | 594 × 841 mm | 23.4 × 33.1 in |
| A2 | 420 × 594 mm | 16.5 × 23.4 in |
| A3 | 297 × 420 mm | 11.7 × 16.5 in |
| A4 | 210 × 297 mm | 8.3 × 11.7 in |
| A5 | 148 × 210 mm | 5.8 × 8.3 in |
| A6 | 105 × 148 mm | 4.1 × 5.8 in |
| A7 | 74 × 105 mm | 2.9 × 4.1 in |
| A8 | 52 × 74 mm | 2 × 2.9 in |
| A9 | 37 × 52 mm | 1.5 × 2 in |
| A10 | 26 × 37 mm | 1 × 1.5 in |
| A11 | 18 × 26 mm | 0.7 × 1 in |
| A12 | 13 × 18 mm | 0.5 × 0.7 in |
| A13 | 9 × 13 mm | 0.4 × 0.5 in |
| 2A0 | 1189 × 1685 mm | 46.8 × 66.2 in |
| 4A0 | 1682 × 2378 mm | 66.2 × 93.6 in |
| A0+ | 914 × 1292 mm | 36 × 50.9 in |
| A1+ | 609 × 914 mm | 24 × 36 in |
| A3+ | 329 × 483 mm | 13 × 19 in |
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Uses
In this section, we’ll cover the most common uses of the standard paper sizes of the A series.
A0
- Maps
- Retail signage
- Technical drawings
- Wall-sized posters
A1
- Architectural plans
- Blueprints
- Event and film posters
- Flip chart presentation sheets
A2
- Art prints
- Medium-sized posters
- Menu boards
- Wall calendars
A3
A4
A5
- Flyers and leaflets
- Invitations
- Notebooks and journals
- Small booklets and planners
A6
- Appointment reminder cards
- Pocket notebooks
- Postcards
- Promotional handouts
A7
- Flashcards
- Gift tags
- Pocket calendars
- Small cards
A8
- Business cards
- Price tags
- Product labels
- Small ID cards
A9
- Jewelry tags
- Small barcode labels
- Seed packets labels
- Tiny product identifiers
A10
- Identification tags
- Industrial component labelling
- Inventory control tags
- Tiny labels
FAQs
A2 is bigger than A3.
- A2: 420 × 594 mm
- A3: 297 × 420 mm
A2 is exactly twice the size of A3.
A5 is bigger than A6.
- A5: 148 × 210 mm
- A6: 105 × 148 mm
A6 is half the size of A5.
No, A6 is much smaller than A4.
- A4: 210 × 297 mm
- A6: 105 × 148 mm
A6 is one-quarter the size of A4.
Here are the dimensions of A1, A2, A3, and A4:
- A1: 594 × 841 mm (23.4 × 33.1 in)
- A2: 420 × 594 mm (16.5 × 23.4 in)
- A3: 297 × 420 mm (11.7 × 16.5 in)
- A4: 210 × 297 mm (8.3 × 11.7 in)
