Photo 8×12 vs JIS B5
| Photo 8×12 | JIS B5 | |
|---|---|---|
| Millimetres | 203.2 × 304.8 | 182 × 257 |
| Inches | 8 × 12 | 7.17 × 10.12 |
| Centimetres | 20.3 × 30.5 | 18.2 × 25.7 |
| Aspect ratio | 1:1.5 | 1:1.41 |
| Area | 619.4 cm² | 467.7 cm² |
Which is bigger
Photo 8×12, by 32.4% in area. Photo 8×12 is 21.2 mm wider than JIS B5. Photo 8×12 is 47.8 mm taller.
Printing one on the other
A JIS B5 page fits inside Photo 8×12 whole — print it at 100% and you get a 10.6 mm border down each side and 23.9 mm top and bottom.
| You want | Set the print scale to | Leaves |
|---|---|---|
| Photo 8×12 artwork on JIS B5 paper | 84.3% | 10.7 × 0 mm margin |
| JIS B5 artwork on Photo 8×12 paper | 111.6% | 0 × 17.9 mm margin |
These are the numbers for the "custom scale" box in a print dialog. "Fit to page" computes the same thing, but knowing the figure tells you in advance whether the result will look deliberate or accidental.
Why the shapes matter
The proportions differ: Photo 8×12 is 1:1.5 and JIS B5 is 1:1.41. That difference is why a layout moved between them never quite lines up — scale it to fit one edge and the other is left with 10.7 mm of unwanted margin.
Frequently asked questions
What is the difference between Photo 8×12 and JIS B5?
Photo 8×12 is 203.2 × 304.8 mm and JIS B5 is 182 × 257 mm. Photo 8×12 is the larger of the two by 32.4% in area.
Can I print Photo 8×12 on JIS B5?
Not at full size. Scale it to 84.3% and it fits inside JIS B5 with 10.7 × 0 mm to spare.
Which is bigger, Photo 8×12 or JIS B5?
Photo 8×12 — 203.2 × 304.8 mm against 182 × 257 mm, which is 32.4% more area.
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Photo 8×12 in full · JIS B5 in full · All size comparisons · All paper sizes