A1 Paper Size Guide
The A1 paper is the second largest size of the A series, defined by the international standard ISO 216:2007. A1 paper has an area of 0.5 square metres, with dimensions of 594 mm × 841 mm (23.4 in × 33.1 in).
Visual Size Comparison
A1 paper dimensions
- Width: 594 mm (23.4 inches)
- Height: 841 mm (33.1 inches)
- Area: 0.5 square metres
- Aspect ratio: 1:√2 (1:1.4142)
Paper Dimensions Overview
| Format | Width x Height (mm) | Width x Height (in) | Size Guide |
|---|---|---|---|
| A0 | 841 x 1189 | 33.1 x 46.8 | A0 Size Guide |
| A1 | 594 x 841 | 23.4 x 33.1 | A1 Size Guide |
| A2 | 420 x 594 | 16.5 x 23.4 | A2 Size Guide |
| A3 | 297 x 420 | 11.7 x 16.5 | A3 Size Guide |
| A4 | 210 x 297 | 8.3 x 11.7 | A4 Size Guide |
| A5 | 148 x 210 | 5.8 x 8.3 | A5 Size Guide |
| A6 | 105 x 148 | 4.1 x 5.8 | A6 Size Guide |
| A7 | 74 x 105 | 2.9 x 4.1 | A7 Size Guide |
The A series uses an aspect ratio of 1:√2, which means folding an A1 sheet in half creates two A2 sheets, and so on. This unique property allows for easy scaling without losing proportion.
Common uses of A1 paper
- Architectural and engineering drawings
- Large posters and advertisements
- Detailed maps and charts
- Art prints and photographs
- Technical schematics
Printing with A1
Large format printers are typically used for A1 printing. These specialised printers can handle the 594 mm x 841 mm paper size. When preparing files for A1 printing, ensure your design software is set to the correct dimensions and use high-resolution images (300 DPI or higher) for best results.
Frequently asked questions
What is the ISO 216 standard?
ISO 216 is the international standard that defines the A and B series of paper sizes, including A0 to A10. It's based on the German DIN 476 standard from 1922.
How are A series paper sizes related?
Each A size is half of the size of the previous one. For example, A1 is half of A0, A2 is half of A1, and so on. They all maintain the same aspect ratio of 1:√2.
Is A1 the largest paper size?
A1 is the second largest size in the A series, after A0. The A0 size (841 x 1189 mm) is twice the size of A1.
Is A1 paper bigger than A2?
Yes, A1 is twice the size of A2. When you fold an A1 sheet in half, you get two A2 sheets.
Can I print A1 at home?
Most home printers can't handle A1 size paper. A1 printing typically requires large format printers found in professional print shops or design studios.
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