C3
324 mm
458 mm
What Size Is C3 Paper?
C3, part of the C Series under the C Envelope Paper Sizes group, measures 324 x 458 mm, which is 32.4 x 45.8 cm or approximately 12.76 x 18.03 inches. It follows the ISO 269 specification and has an area of approximately 0.1484 m².
C3 Paper Size Dimensions & Conversions
Paper Series
C Series
Standard
ISO 269
Width
324 mm
Height
458 mm
Area
0.1484 m²
Aspect Ratio
1:1.414
Previous Size
C2
Next Size
C4
C3 Dimensions in Different Units
| Unit | Width | Height |
|---|---|---|
| Millimeters | 324 mm | 458 mm |
| Centimeters | 32.4 cm | 45.8 cm |
| Inches | 12.76 in | 18.03 in |
| Feet | 1.06 ft | 1.5 ft |
| Meters | 0.324 m | 0.458 m |
| Points | 918 pt | 1298 pt |
| Picas | 76.5 pc | 108.2 pc |
What Is C3 Paper Used For?
Mailing Documents
This C-series envelope size is designed to hold its matching A-series paper size without folding.
Design and Layout
Designers and print professionals use C3 when a layout calls for this specific format.
Reproduction and Scaling
C3 can be scaled up or down to produce related sizes in the same series.
Presentations and Displays
C3 is suitable for boards, handouts, or displays sized to this format.
Archiving and Filing
Printed materials in C3 are stored and filed using standard folders sized for this format.
Digital Reference
C3 dimensions are used as a page-size preset in design and publishing software.
Related C Series Sizes
Frequently Asked Questions
What is C3 size in inches?
C3 measures approximately 12.76 x 18.03 inches.
What is C3 size in centimeters?
C3 measures 32.4 x 45.8 cm.
What is C3 size in millimeters?
C3 measures 324 x 458 mm.
What is C3 size in pixels?
At 300 DPI, C3 is approximately 3828 x 5409 pixels.
Is C3 bigger than C4?
Yes. C3 is larger in area than C4 in the C Envelope Paper Sizes series.