B10 at 600 dpi — 732×1039 pixels

31×44 mm at 600 dpi comes to 732×1039 pixels. On 80 g paper one sheet weighs 0.11 grams.

millimetres: 31 × 44 mm
inches: 1.22 × 1.73 in
Pixels: 732 × 1039 px
All the pixels together: 0.76 MP
Uncompressed, that is: 2.2 MB
Area: 0.0014 m²
Ratio of the sides: 1 : 1.419
Sheets in one letter: 229

Weight per sheet

Paper weight is printed as g/m² — grams for one square metre. An A4 is a sixteenth of an A0, so 0.0625 m²; at 80 g that is 5 grams. If a letter must stay under 25 grams, 80 g paper gives you five sheets.

70 g/m²0.1 g
80 g/m²0.11 g
100 g/m²0.14 g
120 g/m²0.16 g
160 g/m²0.22 g
200 g/m²0.27 g
250 g/m²0.34 g
300 g/m²0.41 g

The envelope it fits

C857×81mm

Nearby cells

B9 · 600dpi

1039×1465

Same size, other resolutions

How to read this

Dimensions are in millimetres. Leftover fractions are dropped when folding, exactly as the standard says.
Pixel counts are rounded. Printers usually ask for 300 dpi.
The weight is the paper alone. Add the envelope and the ink separately.
Letter and Legal are defined in inches, so folding them does not preserve the √2 ratio.

Frequently asked questions

Q. How big is B10?

31×44 mm, or 1.22×1.73 inches.

Q. How many pixels at 600 dpi?

732×1039. That is 0.76 megapixels, or 2.2 MB uncompressed.

Q. What does one sheet weigh?

0.11 g on 80 g paper, 0.16 g on 120 g. A 25 g letter takes 229 of them.

Q. What envelope does it fit?

A C8 envelope, 57×81 mm.