Photo 16×20 vs JIS B3
| Photo 16×20 | JIS B3 | |
|---|---|---|
| Millimetres | 406.4 × 508 | 364 × 515 |
| Inches | 16 × 20 | 14.33 × 20.28 |
| Centimetres | 40.6 × 50.8 | 36.4 × 51.5 |
| Aspect ratio | 1:1.25 | 1:1.41 |
| Area | 2064.5 cm² | 1874.6 cm² |
Which is bigger
Photo 16×20, by 10.1% in area. Photo 16×20 is 42.4 mm wider than JIS B3. JIS B3 is 7 mm taller.
Printing one on the other
Neither sheet fits inside the other at full size: Photo 16×20 is the wider of the two while JIS B3 is the taller, so each overruns the other on one edge. Whichever way you go, something has to scale or crop.
| You want | Set the print scale to | Leaves |
|---|---|---|
| Photo 16×20 artwork on JIS B3 paper | 89.6% | 0 × 60 mm margin |
| JIS B3 artwork on Photo 16×20 paper | 98.6% | 47.3 × 0 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 16×20 is 1:1.25 and JIS B3 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 60 mm of unwanted margin.
Frequently asked questions
What is the difference between Photo 16×20 and JIS B3?
Photo 16×20 is 406.4 × 508 mm and JIS B3 is 364 × 515 mm. Photo 16×20 is the larger of the two by 10.1% in area.
Can I print Photo 16×20 on JIS B3?
Not at full size. Scale it to 89.6% and it fits inside JIS B3 with 0 × 60 mm to spare.
Which is bigger, Photo 16×20 or JIS B3?
Photo 16×20 — 406.4 × 508 mm against 364 × 515 mm, which is 10.1% more area.
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Photo 16×20 in full · JIS B3 in full · All size comparisons · All paper sizes