Quick Answer: The A1 poster size is 594 x 841 millimetres, which is 59.4 x 84.1 centimetres or about 23.4 x 33.1 inches. A1 is twice the size of A2 and half the size of A0, and it is one of the most popular sizes for event posters, school displays, retail signage and presentation boards. If you are printing an A1 poster, add 3mm bleed on every side so your artwork file measures 600 x 847mm.
A1 Poster Size at a Glance
| Measurement | A1 size |
|---|---|
| Millimetres | 594 x 841mm |
| Centimetres | 59.4 x 84.1cm |
| Inches | 23.4 x 33.1 inches (approx.) |
| With 3mm bleed | 600 x 847mm |
| Pixels at 300dpi | 7016 x 9933 pixels |
| Pixels at 150dpi | 3508 x 4967 pixels |
What Size Is an A1 Poster Compared to Other A Sizes?
Every A size is half the one before it. Fold an A1 sheet in half and you get A2, and two A1 sheets side by side make A0. This is why A sizes scale up and down so neatly: a design made for A1 keeps the same proportions at A2, A3 or A0.
| Size | Millimetres | How it relates to A1 |
|---|---|---|
| A0 | 841 x 1189mm | Twice the size of A1 |
| A1 | 594 x 841mm | The A1 poster size |
| A2 | 420 x 594mm | Half of A1 |
| A3 | 297 x 420mm | A quarter of A1 |
| A4 | 210 x 297mm | One eighth of A1 (eight A4 sheets fit on A1) |
If you are deciding between the two most common large poster sizes, our guide to the [A2 poster size] [LINK NEEDED: a2 poster size article, once published] compares the two in more detail.
Where an A1 Poster Works Best
A1 is large enough to be read from across a room but still easy to handle, frame and transport. It is a good fit for:
- Event, concert and conference posters
- School and university displays, including open days and exhibitions
- Retail and window posters, sale signage and point-of-sale displays
- Architecture and design presentation boards
- Research and academic posters
- Real estate and property development marketing
For student work and design submissions, see our guide to architecture portfolio printing.
How to Set Up Artwork for A1 Poster Printing
Getting the file right before printing saves time and avoids reprints. When you set up an A1 poster:
- Set the page to 594 x 841mm, portrait or landscape.
- Add 3mm bleed on every side, extending backgrounds and images to the edge of the bleed (600 x 847mm in total).
- Keep text and logos inside a safe margin of at least 10mm from the trim edge.
- Use high-resolution images. Aim for 300dpi at final size where possible. Posters viewed from a few metres away can often look sharp at 150dpi, but check with our prepress team before you rely on lower-resolution images.
- Supply a print-ready PDF with fonts embedded or outlined, set up in CMYK colour.
If you are unsure whether your file is ready, the artwork and graphic prepress team at Eplot can check it before it goes to print.
A1 Poster Paper and Materials
The right material depends on where your poster will go and how long it needs to last. At Eplot, A1 posters are printed in-house on our wide format equipment, which handles prints up to 1.3 metres wide. Common options include:
- Paper stocks for indoor posters, in gloss, satin or matt finishes
- Polypropylene for a tougher, tear-resistant poster
- PVC and weatherproof options for outdoor use
- Foam board for rigid display boards that stand on an easel or hang on a wall
- Corflute for lightweight, weather-resistant signs
See our large format printing page for more on wide format materials, or our guide to types of signage for business if your poster is part of a wider signage project.
A1 Poster Frame Size
An A1 frame is made to hold a 594 x 841mm print. If you want a white border, or mat, around your poster, you will usually need a larger frame, often A0 or a custom size, depending on how wide you want the border. Measure the frame’s opening, not its outside edge, before ordering a print to fit it.
Frequently Asked Questions
What size is an A1 poster?
An A1 poster is 594 x 841mm, or 59.4 x 84.1cm. That is about 23.4 x 33.1 inches.
What is the A1 poster size in cm?
The A1 poster size in centimetres is 59.4 x 84.1cm.
Is A1 bigger than A2?
Yes. A1 is twice the size of A2. An A2 poster is 420 x 594mm, which is exactly half of an A1 sheet.
How many A4 pages fit on an A1 poster?
Eight A4 pages fit on one A1 sheet, arranged in a 2 x 4 grid.
What resolution do I need for an A1 poster?
Aim for 300dpi at final size, which is 7016 x 9933 pixels. For posters viewed from further away, 150dpi (3508 x 4967 pixels) can still look sharp. Talk to the Eplot prepress team if you are unsure.
About Eplot
Eplot is a commercial printer based at 28 Tope Street, South Melbourne, with 20 years in the printing industry. Our team runs HP Indigo digital printing, wide format printing, pre-press and finishing in-house, and manages specialty work through trusted print partners, so you deal with one dedicated account manager from quote to delivery. Eplot works with schools, universities, training organisations, property developers, corporates and small businesses across Melbourne.
Print Your A1 Poster with Eplot
Ready to print? Request a quote with your size, material and quantity, or call Eplot on 1300 660 228. See our full range of poster and signage printing options.
