ARCH C vs Photo 16×20
| ARCH C | Photo 16×20 | |
|---|---|---|
| Millimetres | 457.2 × 609.6 | 406.4 × 508 |
| Inches | 18 × 24 | 16 × 20 |
| Centimetres | 45.7 × 61 | 40.6 × 50.8 |
| Aspect ratio | 1:1.33 | 1:1.25 |
| Area | 2787.1 cm² | 2064.5 cm² |
Which is bigger
ARCH C, by 35% in area. ARCH C is 50.8 mm wider than Photo 16×20. ARCH C is 101.6 mm taller.
Printing one on the other
A Photo 16×20 page fits inside ARCH C whole — print it at 100% and you get a 25.4 mm border down each side and 50.8 mm top and bottom.
| You want | Set the print scale to | Leaves |
|---|---|---|
| ARCH C artwork on Photo 16×20 paper | 83.3% | 25.4 × 0 mm margin |
| Photo 16×20 artwork on ARCH C paper | 112.5% | 0 × 38.1 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 C is 1:1.33 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 25.4 mm of unwanted margin.
Frequently asked questions
What is the difference between ARCH C and Photo 16×20?
ARCH C is 457.2 × 609.6 mm and Photo 16×20 is 406.4 × 508 mm. ARCH C is the larger of the two by 35% in area.
Can I print ARCH C on Photo 16×20?
Not at full size. Scale it to 83.3% and it fits inside Photo 16×20 with 25.4 × 0 mm to spare.
Which is bigger, ARCH C or Photo 16×20?
ARCH C — 457.2 × 609.6 mm against 406.4 × 508 mm, which is 35% more area.
ARCH C in full · Photo 16×20 in full · All size comparisons · All paper sizes