Toolman

B6 vs Photo 4×6

B6Photo 4×6
Millimetres125 × 176101.6 × 152.4
Inches4.92 × 6.934 × 6
Centimetres12.5 × 17.610.2 × 15.2
Aspect ratio1:1.411:1.5
Area220 cm²154.8 cm²

Which is bigger

B6, by 42.1% in area. B6 is 23.4 mm wider than Photo 4×6. B6 is 23.6 mm taller.

Printing one on the other

A Photo 4×6 page fits inside B6 whole — print it at 100% and you get a 11.7 mm border down each side and 11.8 mm top and bottom.

You wantSet the print scale toLeaves
B6 artwork on Photo 4×6 paper81.3%0 × 9.3 mm margin
Photo 4×6 artwork on B6 paper115.5%7.7 × 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: B6 is 1:1.41 and Photo 4×6 is 1:1.5. 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 9.3 mm of unwanted margin.

Frequently asked questions

What is the difference between B6 and Photo 4×6?

B6 is 125 × 176 mm and Photo 4×6 is 101.6 × 152.4 mm. B6 is the larger of the two by 42.1% in area.

Can I print B6 on Photo 4×6?

Not at full size. Scale it to 81.3% and it fits inside Photo 4×6 with 0 × 9.3 mm to spare.

Which is bigger, B6 or Photo 4×6?

B6 — 125 × 176 mm against 101.6 × 152.4 mm, which is 42.1% more area.

B6 in full · Photo 4×6 in full · All size comparisons · All paper sizes