ARCH B vs Photo 16×20
| ARCH B | Photo 16×20 | |
|---|---|---|
| Millimetres | 304.8 × 457.2 | 406.4 × 508 |
| Inches | 12 × 18 | 16 × 20 |
| Centimetres | 30.5 × 45.7 | 40.6 × 50.8 |
| Aspect ratio | 1:1.5 | 1:1.25 |
| Area | 1393.5 cm² | 2064.5 cm² |
Which is bigger
Photo 16×20, by 48.1% in area. Photo 16×20 is 101.6 mm wider than ARCH B. Photo 16×20 is 50.8 mm taller.
Printing one on the other
A ARCH B page fits inside Photo 16×20 whole — print it at 100% and you get a 50.8 mm border down each side and 25.4 mm top and bottom.
| You want | Set the print scale to | Leaves |
|---|---|---|
| ARCH B artwork on Photo 16×20 paper | 111.1% | 67.7 × 0 mm margin |
| Photo 16×20 artwork on ARCH B paper | 75% | 0 × 76.2 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: ARCH B is 1:1.5 and Photo 16×20 is 1:1.25. 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 67.7 mm of unwanted margin.
Frequently asked questions
What is the difference between ARCH B and Photo 16×20?
ARCH B is 304.8 × 457.2 mm and Photo 16×20 is 406.4 × 508 mm. Photo 16×20 is the larger of the two by 48.1% in area.
Can I print ARCH B on Photo 16×20?
Yes, at 100% — ARCH B is smaller on both edges, so it lands inside Photo 16×20 with a border all round.
Which is bigger, ARCH B or Photo 16×20?
Photo 16×20 — 406.4 × 508 mm against 304.8 × 457.2 mm, which is 48.1% more area.
ARCH B in full · Photo 16×20 in full · All size comparisons · All paper sizes