A3U
320 mm
450 mm
What Size Is A3U Paper?
A3U, part of the RA / SRA Series under the Raw Paper Sizes group, measures 320 x 450 mm, which is 32.0 x 45.0 cm or approximately 12.6 x 17.72 inches. It follows the ISO 217 specification and has an area of approximately 0.144 m².
A3U Paper Size Dimensions & Conversions
Paper Series
RA / SRA Series
Standard
ISO 217
Width
320 mm
Height
450 mm
Area
0.144 m²
Aspect Ratio
1:1.406
Previous Size
A2U
Next Size
A3U Dimensions in Different Units
| Unit | Width | Height |
|---|---|---|
| Millimeters | 320 mm | 450 mm |
| Centimeters | 32.0 cm | 45.0 cm |
| Inches | 12.6 in | 17.72 in |
| Feet | 1.05 ft | 1.48 ft |
| Meters | 0.32 m | 0.45 m |
| Points | 907 pt | 1276 pt |
| Picas | 75.6 pc | 106.3 pc |
What Is A3U Paper Used For?
Pre-Trim Printing
This raw/untrimmed sheet size gives printers extra margin for bleed before trimming to the final size.
Design and Layout
Designers and print professionals use A3U when a layout calls for this specific format.
Reproduction and Scaling
A3U can be scaled up or down to produce related sizes in the same series.
Presentations and Displays
A3U is suitable for boards, handouts, or displays sized to this format.
Archiving and Filing
Printed materials in A3U are stored and filed using standard folders sized for this format.
Digital Reference
A3U dimensions are used as a page-size preset in design and publishing software.
Related RA / SRA Series Sizes
Frequently Asked Questions
What is A3U size in inches?
A3U measures approximately 12.6 x 17.72 inches.
What is A3U size in centimeters?
A3U measures 32.0 x 45.0 cm.
What is A3U size in millimeters?
A3U measures 320 x 450 mm.
What is A3U size in pixels?
At 300 DPI, A3U is approximately 3780 x 5316 pixels.
What series does A3U belong to?
A3U is part of the Raw Paper Sizes format group.