Japanese JIS B series
JIS B1 paper size
JIS B1 measures 728 x 1030 mm (28.66 x 40.55 in). Part of the Japanese JIS B series.
728 x 1030millimetres
28.66 x 40.55inches
8,598 x 12,165pixels @ 300 dpi
Dimensions in every unit
| Unit | Width x height |
|---|---|
| Millimetres | 728 x 1030 mm |
| Centimetres | 72.8 x 103 cm |
| Inches (decimal) | 28.661 x 40.551 in |
| Inches (fraction) | 28 11/16 x 40 9/16 in |
| Points (1/72 in) | 2063.6 x 2919.7 pt |
| Picas | 171.97 x 243.31 pc |
Pixel dimensions by resolution
| Resolution | Pixels | Megapixels |
|---|---|---|
| 72 dpi | 2,064 x 2,920 px | 6 MP |
| 96 dpi | 2,751 x 3,893 px | 10.7 MP |
| 150 dpi | 4,299 x 6,083 px | 26.2 MP |
| 200 dpi | 5,732 x 8,110 px | 46.5 MP |
| 300 dpi | 8,598 x 12,165 px | 104.6 MP |
| 600 dpi | 17,197 x 24,331 px | 418.4 MP |
300 dpi is the usual target for printed photos and artwork; 72–96 dpi is screen resolution.
Document size with bleed
| Bleed | Millimetres | Inches |
|---|---|---|
| 3 mm bleed (each side) | 734 x 1036 mm | 28.898 x 40.787 in |
| 0.125 in bleed (each side) | 734.4 x 1036.4 mm | 28.911 x 40.801 in |
The √2 system
JIS B1 has an aspect ratio of 1 : 1.4148 — close to √2 (1.4142). Folding or cutting it in half across the long side produces the next smaller size in the series with the same proportions, and two sheets side by side form the next larger size. This is why scaling between sizes in the series (for example on a photocopier) never crops or distorts the page.
Similar sizes
Frequently asked questions
What are the dimensions of JIS B1?
JIS B1 is 728 x 1030 mm, which is 28.66 x 40.55 in (28 11/16 x 40 9/16 in).
How many pixels is JIS B1 at 300 DPI?
8,598 x 12,165 pixels at 300 dpi, or 4,299 x 6,083 at 150 dpi.
Sources & data
- Dimensions per the relevant standard; see sources.