Photo 4×6 vs JIS B7
| Photo 4×6 | JIS B7 | |
|---|---|---|
| Millimetres | 101.6 × 152.4 | 91 × 128 |
| Inches | 4 × 6 | 3.58 × 5.04 |
| Centimetres | 10.2 × 15.2 | 9.1 × 12.8 |
| Aspect ratio | 1:1.5 | 1:1.41 |
| Area | 154.8 cm² | 116.5 cm² |
Which is bigger
Photo 4×6, by 32.9% in area. Photo 4×6 is 10.6 mm wider than JIS B7. Photo 4×6 is 24.4 mm taller.
Printing one on the other
A JIS B7 page fits inside Photo 4×6 whole — print it at 100% and you get a 5.3 mm border down each side and 12.2 mm top and bottom.
| You want | Set the print scale to | Leaves |
|---|---|---|
| Photo 4×6 artwork on JIS B7 paper | 84% | 5.7 × 0 mm margin |
| JIS B7 artwork on Photo 4×6 paper | 111.6% | 0 × 9.5 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 4×6 is 1:1.5 and JIS B7 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 5.7 mm of unwanted margin.
Frequently asked questions
What is the difference between Photo 4×6 and JIS B7?
Photo 4×6 is 101.6 × 152.4 mm and JIS B7 is 91 × 128 mm. Photo 4×6 is the larger of the two by 32.9% in area.
Can I print Photo 4×6 on JIS B7?
Not at full size. Scale it to 84% and it fits inside JIS B7 with 5.7 × 0 mm to spare.
Which is bigger, Photo 4×6 or JIS B7?
Photo 4×6 — 101.6 × 152.4 mm against 91 × 128 mm, which is 32.9% more area.
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