Everything You Need to Know about A1 Size
Jan 01, 1970
Everything You Need to Know About A1 Paper Size
If you are wondering what size is A1 paper, you are not alone. A1 paper size is one of the most commonly used large-format printing sizes for posters, technical drawings, presentations, architectural plans, educational charts, and promotional displays.
At Printbox London, we provide professional A1 poster printing services with fast turnaround, premium print quality, and affordable pricing across London.
What Is the Size of A1 Paper?
The official A1 paper size dimensions are:
- 594 x 841 mm
- 59.4 x 84.1 cm
- 23.4 x 33.1 inches
A1 belongs to the ISO 216 international paper size standard. It is part of the A-series paper system used globally for printing and design.
A1 Size Compared to Other Paper Sizes
Understanding how A1 compares to other paper sizes can help you choose the right format for your project.
| Paper Size | Dimensions (mm) | Dimensions (inches) |
|---|---|---|
| A0 | 841 x 1189 mm | 33.1 x 46.8 in |
| A1 | 594 x 841 mm | 23.4 x 33.1 in |
| A2 | 420 x 594 mm | 16.5 x 23.4 in |
| A3 | 297 x 420 mm | 11.7 x 16.5 in |
| A4 | 210 x 297 mm | 8.3 x 11.7 in |
| A5 | 148 x 210 mm | 5.8 x 8.3 in |
How Big Is A1 Paper?
Many customers ask, “How big is A1 paper compared to standard office paper?”
An A1 sheet is exactly half the size of A0 and twice the size of A2. It offers a large printing area without becoming too difficult to transport or display.
Because of its large format, A1 printing is ideal for:
- Event posters
- Retail signage
- Presentation boards
- Architectural drawings
- Engineering plans
- Movie and theatre posters
- Educational displays
- Large photo prints
Common Uses for A1 Printing
1. Posters and Advertising Displays
A1 poster printing is extremely popular for businesses promoting events, products, and services. The larger print area allows graphics and text to remain visible from a distance.
2. Architectural and Engineering Plans
Architects and engineers frequently use A1 format because it provides enough space for detailed technical drawings while remaining practical for transport and presentations.
3. Educational Materials
Schools, colleges, and universities often use A1 paper for revision charts, presentations, diagrams, and teaching materials.
4. Art and Photography Prints
Artists and photographers choose A1 print size to showcase high-resolution images with excellent visual impact.
A1 Resolution Guide for Printing
To achieve the best print quality, your artwork should be designed at the correct resolution.
- 300 DPI: 7016 x 9933 pixels
- 150 DPI: 3508 x 4967 pixels
- 72 DPI: 1684 x 2384 pixels
For professional-quality results, we recommend using 300 DPI whenever possible.
Portrait vs Landscape A1 Format
A1 prints can be produced in either portrait or landscape orientation depending on your design needs.
- Portrait A1: 594 mm width × 841 mm height
- Landscape A1: 841 mm width × 594 mm height
Tips for Designing an Effective A1 Poster
Use High-Resolution Images
Low-quality images may appear pixelated when enlarged to A1 dimensions.
Keep Text Readable
Use clear fonts and maintain strong contrast between text and background colours.
Do Not Overcrowd the Layout
White space improves readability and helps important information stand out.
Choose Bold Colours
Bright, vivid colours are highly effective for promotional posters and event displays.
Why Choose Printbox London for A1 Printing?
At Printbox London, we specialise in premium large-format printing with fast turnaround times and exceptional print quality.
- Same-day printing available
- Professional colour accuracy
- Gloss, matte, and satin finishes
- High-quality paper stocks
- Affordable prices
- Collection and delivery options
Whether you need one poster or bulk A1 prints for a marketing campaign, our team is ready to help.
Frequently Asked Questions About A1 Paper Size
What size is A1 paper in inches?
A1 paper measures 23.4 x 33.1 inches.
What are the dimensions of A1 paper in mm?
The dimensions for A1 paper are 594 x 841 mm.
What size is A1 in cm?
A1 paper size is 59.4 x 84.1 cm.
Is A1 bigger than A2?
Yes. A1 is twice the size of A2.
Can I print photos in A1 format?
Yes. A1 photo printing is popular for exhibitions, artwork, and promotional displays.
Order High-Quality A1 Printing in London
Looking for professional A1 printing in London? Printbox London offers high-quality poster and large-format printing with fast turnaround and competitive prices.
Visit our poster printing page or contact our team today for expert advice and same-day printing options.