ISO A · ISO 216
A1 paper size
A large ISO sheet commonly chosen for posters, plan drawings, academic displays, and presentation boards that need more detail than A2.
Open in the converterDirect answer
A1 dimensions in every unit
In portrait orientation, width comes first: 594 mm × 841 mm. Rotate the sheet for landscape orientation and the same measurements reverse.
| Unit | Width | Height |
|---|---|---|
| Millimeters | 594 mm | 841 mm |
| Centimeters | 59.4 cm | 84.1 cm |
| Inches | 23.39 in | 33.11 in |
| Points | 1683.8 pt | 2383.9 pt |
Digital artwork
A1 pixel dimensions by DPI
Pixel dimensions depend on output resolution. These values describe the trimmed page only and do not include printer bleed.
| Resolution | Pixel width | Pixel height | Typical use |
|---|---|---|---|
| 72 DPI | 1,684 px | 2,384 px | Screen preview |
| 96 DPI | 2,245 px | 3,179 px | Screen preview |
| 150 DPI | 3,508 px | 4,967 px | Draft print |
| 300 DPI | 7,016 px | 9,933 px | Quality print |
| 600 DPI | 14,031 px | 19,866 px | High-detail source |
Proportion & comparison
How A1 relates to nearby sizes
A1 is half the area of A0 and twice the area of A2. Fold A1 in half parallel to the short edge and the result is A2.
- Portrait ratio
- 1 : 1.4158
- Area
- 0.4996 m²
- Orientation
- 594 × 841 mm
Works well for
Common A1 uses
- Posters
- Academic displays
- Architectural plans
- Retail presentation boards
Check before using
Where it can go wrong
- Desktop printers
- Mailing without folding or a tube
- Raster graphics prepared only for screens
Regional & printer note
Will a printer recognize A1?
Widely recognized by print shops and plotters in ISO-size markets; uncommon in ordinary desktop printer trays.
Always match the document size, print-driver size, paper tray, and physical sheet. A driver can silently scale a page even when the preview looks correct.
Measurement source
Checked against the defining standard
Paper Size Lab converts the stored millimeter measurements mathematically; it does not round-trip between units. The underlying sheet family is referenced to the standards organization below.
Read ISO 216:2007Questions people ask
A1 paper FAQ
What are the dimensions of A1 paper?
A1 measures 594 × 841 millimeters, 59.4 × 84.1 centimeters, or 23.39 × 33.11 inches in portrait orientation.
How many pixels is A1 at 300 DPI?
A1 is 7016 × 9933 pixels at 300 DPI before adding bleed.
Is A1 the same as another paper size?
A1 is half the area of A0 and twice the area of A2. Fold A1 in half parallel to the short edge and the result is A2.
What is A1 commonly used for?
A1 is commonly used for posters, academic displays, architectural plans, retail presentation boards. Printer, postal, and finishing requirements still vary.