Photo 16×20 vs Super A3
| Photo 16×20 | Super A3 | |
|---|---|---|
| Millimetres | 406.4 × 508 | 329 × 483 |
| Inches | 16 × 20 | 12.95 × 19.02 |
| Centimetres | 40.6 × 50.8 | 32.9 × 48.3 |
| Aspect ratio | 1:1.25 | 1:1.47 |
| Area | 2064.5 cm² | 1589.1 cm² |
Which is bigger
Photo 16×20, by 29.9% in area. Photo 16×20 is 77.4 mm wider than Super A3. Photo 16×20 is 25 mm taller.
Printing one on the other
A Super A3 page fits inside Photo 16×20 whole — print it at 100% and you get a 38.7 mm border down each side and 12.5 mm top and bottom.
| You want | Set the print scale to | Leaves |
|---|---|---|
| Photo 16×20 artwork on Super A3 paper | 81% | 0 × 71.8 mm margin |
| Super A3 artwork on Photo 16×20 paper | 105.2% | 60.4 × 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 Super A3 is 1:1.47. 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 71.8 mm of unwanted margin.
Frequently asked questions
What is the difference between Photo 16×20 and Super A3?
Photo 16×20 is 406.4 × 508 mm and Super A3 is 329 × 483 mm. Photo 16×20 is the larger of the two by 29.9% in area.
Can I print Photo 16×20 on Super A3?
Not at full size. Scale it to 81% and it fits inside Super A3 with 0 × 71.8 mm to spare.
Which is bigger, Photo 16×20 or Super A3?
Photo 16×20 — 406.4 × 508 mm against 329 × 483 mm, which is 29.9% more area.
Photo 16×20 in full · Super A3 in full · All size comparisons · All paper sizes