JB9
45 mm
64 mm
What Size Is JB9 Paper?
JB9, part of the JIS B Series under the Japanese Paper Sizes group, measures 45 x 64 mm, which is 4.5 x 6.4 cm or approximately 1.77 x 2.52 inches. It follows the JIS P 0138 specification and has an area of approximately 28.8 cm².
JB9 Paper Size Dimensions & Conversions
Paper Series
JIS B Series
Standard
JIS P 0138
Width
45 mm
Height
64 mm
Area
28.8 cm²
Aspect Ratio
1:1.422
Previous Size
JB8
Next Size
JB10
JB9 Dimensions in Different Units
| Unit | Width | Height |
|---|---|---|
| Millimeters | 45 mm | 64 mm |
| Centimeters | 4.5 cm | 6.4 cm |
| Inches | 1.77 in | 2.52 in |
| Feet | 0.15 ft | 0.21 ft |
| Meters | 0.045 m | 0.064 m |
| Points | 128 pt | 181 pt |
| Picas | 10.6 pc | 15.1 pc |
What Is JB9 Paper Used For?
Printing in Japan
This size is part of Japan's JIS paper standard, used for documents, books, and printing.
Design and Layout
Designers and print professionals use JB9 when a layout calls for this specific format.
Reproduction and Scaling
JB9 can be scaled up or down to produce related sizes in the same series.
Presentations and Displays
JB9 is suitable for boards, handouts, or displays sized to this format.
Archiving and Filing
Printed materials in JB9 are stored and filed using standard folders sized for this format.
Digital Reference
JB9 dimensions are used as a page-size preset in design and publishing software.
Related JIS B Series Sizes
Frequently Asked Questions
What is JB9 size in inches?
JB9 measures approximately 1.77 x 2.52 inches.
What is JB9 size in centimeters?
JB9 measures 4.5 x 6.4 cm.
What is JB9 size in millimeters?
JB9 measures 45 x 64 mm.
What is JB9 size in pixels?
At 300 DPI, JB9 is approximately 531 x 756 pixels.
Is JB9 bigger than JB10?
Yes. JB9 is larger in area than JB10 in the Japanese Paper Sizes series.