ISO A · ISO 216
A0 paper size
The largest standard ISO A-series sheet, designed to have an area of approximately one square meter and used for full-size display and technical work.
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A0 dimensions in every unit
In portrait orientation, width comes first: 841 mm × 1189 mm. Rotate the sheet for landscape orientation and the same measurements reverse.
| Unit | Width | Height |
|---|---|---|
| Millimeters | 841 mm | 1189 mm |
| Centimeters | 84.1 cm | 118.9 cm |
| Inches | 33.11 in | 46.81 in |
| Points | 2383.9 pt | 3370.4 pt |
Digital artwork
A0 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 | 2,384 px | 3,370 px | Screen preview |
| 96 DPI | 3,179 px | 4,494 px | Screen preview |
| 150 DPI | 4,967 px | 7,022 px | Draft print |
| 300 DPI | 9,933 px | 14,043 px | Quality print |
| 600 DPI | 19,866 px | 28,087 px | High-detail source |
Proportion & comparison
How A0 relates to nearby sizes
A0 has twice the area of A1 and sixteen times the area of A4. Its trimmed dimensions are rounded to whole millimeters under ISO 216.
- Portrait ratio
- 1 : 1.4138
- Area
- 0.9999 m²
- Orientation
- 841 × 1189 mm
Works well for
Common A0 uses
- Exhibition posters
- Architectural plans
- Large maps
- Presentation boards
Check before using
Where it can go wrong
- Office printers
- Documents meant for handheld reading
- Artwork exported without checking memory limits
Regional & printer note
Will a printer recognize A0?
A0 is a commercial wide-format size across ISO markets. It normally requires a plotter or print shop rather than an office printer.
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
A0 paper FAQ
What are the dimensions of A0 paper?
A0 measures 841 × 1189 millimeters, 84.1 × 118.9 centimeters, or 33.11 × 46.81 inches in portrait orientation.
How many pixels is A0 at 300 DPI?
A0 is 9933 × 14043 pixels at 300 DPI before adding bleed.
Is A0 the same as another paper size?
A0 has twice the area of A1 and sixteen times the area of A4. Its trimmed dimensions are rounded to whole millimeters under ISO 216.
What is A0 commonly used for?
A0 is commonly used for exhibition posters, architectural plans, large maps, presentation boards. Printer, postal, and finishing requirements still vary.