A1+
Dimensions: 609 × 914 mm (23.98 × 35.98 in)
A1+ measures 609 × 914 mm (23.98 × 35.98 in) and belongs to the ISO 216 standard. It is commonly used for oversized a1 posters.
What size is A1+ paper?
An A1+ piece of paper measures 609 × 914 mm or 23.98 × 35.98 inches. It is part of the A Paper Sizes standard.
| Units | Width × Height |
|---|---|
| Metric millimeters (mm) | 609 × 914 mm |
| Metric centimeters (cm) | 60.90 × 91.40 cm |
| Metric meters (m) | 0.609 × 0.914 m |
| Imperial inches (in) | 23.98 × 35.98 in |
| Typographic points (1/72 inch) (pt) | 1726.30 × 2590.87 pt |
| Typographic picas (1/6 inch) (pc) | 143.86 × 215.91 pc |
| Pixels at 300 DPI (px) | 7,193 × 10,795 px |
A1+ is part of the a paper sizes standard. The A series traces its standardised dimensions to DIN 476, published in Germany in 1922. Georg Christoph Lichtenberg had described the underlying square-root-of-two aspect-ratio principle in 1786. ISO 216 brought the A and B trimmed-paper formats into an international standard in 1975; numbered A sizes retain approximately the same proportions as each sheet is halved.
Quick facts
- Size (mm)609 × 914 mm
- Size (inches)23.98 × 35.98 in
- Aspect ratio1 : √2 (≈ 1.414)
- StandardISO 216
- Common useDocuments, letters, forms
Compare A1+ with other sizes
Typical uses for A1+
A1+ measures 609 × 914 mm (23.98 × 35.98 in) and is used for the following tasks.
- Oversized A1 posters
- Inkjet proof sheets
- Photographic and art prints
- Event and retail signage
Printer tip
A1+ needs a wide-format plotter or a commercial print service. Check the maximum roll width and supported media before sending the job.
A1+ at common DPI
Pixel dimensions for A1+ at popular resolutions. Rounded to whole pixels; physical sheet remains 609 × 914 mm.
| DPI | Width (px) | Height (px) |
|---|---|---|
| 72 | 1,726 | 2,591 |
| 96 | 2,302 | 3,454 |
| 150 | 3,596 | 5,398 |
| 300 | 7,193 | 10,795 |
| 600 | 14,386 | 21,591 |
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609 × 914 mm (23.98 × 35.98 in)