Australian Paper Sizes: A0 to A10 Dimensions Guide
Need to know the size of A4, A3 or another sheet of paper? This Australian paper size guide lists A0 to A10 dimensions in millimetres, centimetres and inches, with common uses for each size.
Australian paper size chart
Dimensions below are listed as short side × long side. Turn the sheet to use it in landscape orientation.
| Size | Millimetres | Centimetres | Inches |
|---|---|---|---|
| A0 | 841 × 1189 mm | 84.1 × 118.9 cm | 33.11 × 46.81 in |
| A1 | 594 × 841 mm | 59.4 × 84.1 cm | 23.39 × 33.11 in |
| A2 | 420 × 594 mm | 42.0 × 59.4 cm | 16.54 × 23.39 in |
| A3 | 297 × 420 mm | 29.7 × 42.0 cm | 11.69 × 16.54 in |
| A4 | 210 × 297 mm | 21.0 × 29.7 cm | 8.27 × 11.69 in |
| A5 | 148 × 210 mm | 14.8 × 21.0 cm | 5.83 × 8.27 in |
| A6 | 105 × 148 mm | 10.5 × 14.8 cm | 4.13 × 5.83 in |
| A7 | 74 × 105 mm | 7.4 × 10.5 cm | 2.91 × 4.13 in |
| A8 | 52 × 74 mm | 5.2 × 7.4 cm | 2.05 × 2.91 in |
| A9 | 37 × 52 mm | 3.7 × 5.2 cm | 1.46 × 2.05 in |
| A10 | 26 × 37 mm | 2.6 × 3.7 cm | 1.02 × 1.46 in |
Inch measurements are rounded conversions. Millimetres are the standard reference dimensions.
How the A-series paper sizes work
The A-series follows a simple pattern: each size is half the area of the one before it. Fold an A3 sheet in half and you have two A4-sized sections. Fold A4 in half and you have two A5-sized sections.
The larger the number after “A”, the smaller the sheet. All A-series sizes keep the same proportions, which makes it possible to scale a document between sizes without changing its shape.
Common uses for each paper size
A0 — 841 × 1189 mm
A0 is the largest standard A-series size. It is commonly used for large technical drawings, architectural plans, posters and display graphics.
A1 — 594 × 841 mm
A1 is suitable for plans, maps, diagrams, flip charts and large posters where the content needs to be visible from a distance.
A2 — 420 × 594 mm
A2 is often used for medium-sized posters, artwork, calendars and detailed diagrams.
A3 — 297 × 420 mm
A3 gives you twice the area of A4. It is useful for spreadsheets, drawings, presentations, charts and layouts that need more room. An A3 sheet can also be folded in half to make an A4-sized booklet or brochure.
A4 — 210 × 297 mm
A4 is the everyday office paper size in Australia. Use it for letters, reports, forms, invoices, schoolwork and general printer paper.
A5 — 148 × 210 mm
A5 is half the size of A4. It is commonly used for notebooks, diaries, flyers, invitations and compact booklets.
A6 — 105 × 148 mm
A6 is a small format often used for postcards, greeting cards, invitations and pocket-sized booklets.
A7 to A10 — small-format paper
The smaller A-series sizes are useful for compact printed items. Depending on the design and production method, they may suit tickets, labels, coupons, tags or small inserts. Check the finished dimensions and printer or print supplier requirements before preparing artwork.
Choosing the right paper size
- For everyday office documents: A4 is the usual choice.
- For larger documents or visuals: Consider A3 for plans, charts, diagrams or presentations.
- For compact reading or handouts: A5 works well for booklets, flyers and notebooks.
- For cards and small printed pieces: A6 and smaller sizes may suit postcards, tickets or labels.
- For printing: Check that your printer supports the size and paper weight you want to use. For commercial print, confirm artwork dimensions, bleed and finishing requirements with your print supplier.
Frequently asked questions
What is the standard paper size in Australia?
A4 is the standard size for everyday office documents and general printing. It measures 210 × 297 mm.
Is A3 bigger than A4?
Yes. A3 measures 297 × 420 mm and has twice the area of A4. An A3 sheet is the same size as two A4 sheets placed side by side.
What is half of A4 paper?
Half of A4 is A5: 148 × 210 mm.
Are paper sizes in Australia the same as in other countries?
Australia uses the international A-series paper sizes for common formats such as A4, A3 and A5. Some countries also use other formats, so check the required dimensions when sending documents or artwork internationally.
What size is printer paper in Australia?
For most everyday printing, printer paper is A4. Larger or smaller formats depend on the printer model and the print job, so check the device specifications before buying paper.
