ISO C series (envelopes)
C0 envelope size
C0 envelope measures 917 x 1297 mm (36.1 x 51.06 in). Part of the ISO C series (envelopes).
917 x 1297millimetres
36.1 x 51.06inches
10,831 x 15,319pixels @ 300 dpi
Dimensions in every unit
| Unit | Width x height |
|---|---|
| Millimetres | 917 x 1297 mm |
| Centimetres | 91.7 x 129.7 cm |
| Inches (decimal) | 36.102 x 51.063 in |
| Inches (fraction) | 36 1/8 x 51 1/16 in |
| Points (1/72 in) | 2599.4 x 3676.5 pt |
| Picas | 216.61 x 306.38 pc |
Pixel dimensions by resolution
| Resolution | Pixels | Megapixels |
|---|---|---|
| 72 dpi | 2,599 x 3,677 px | 9.6 MP |
| 96 dpi | 3,466 x 4,902 px | 17 MP |
| 150 dpi | 5,415 x 7,659 px | 41.5 MP |
| 200 dpi | 7,220 x 10,213 px | 73.7 MP |
| 300 dpi | 10,831 x 15,319 px | 165.9 MP |
| 600 dpi | 21,661 x 30,638 px | 663.7 MP |
300 dpi is the usual target for printed photos and artwork; 72–96 dpi is screen resolution.
Document size with bleed
| Bleed | Millimetres | Inches |
|---|---|---|
| 3 mm bleed (each side) | 923 x 1303 mm | 36.339 x 51.299 in |
| 0.125 in bleed (each side) | 923.4 x 1303.4 mm | 36.352 x 51.313 in |
The √2 system
C0 envelope has an aspect ratio of 1 : 1.4144 — close to √2 (1.4142). Folding or cutting it in half across the long side produces the next smaller size in the series with the same proportions, and two sheets side by side form the next larger size. This is why scaling between sizes in the series (for example on a photocopier) never crops or distorts the page.
Similar sizes
Frequently asked questions
What are the dimensions of C0 envelope?
C0 envelope is 917 x 1297 mm, which is 36.1 x 51.06 in (36 1/8 x 51 1/16 in).
How many pixels is C0 envelope at 300 DPI?
10,831 x 15,319 pixels at 300 dpi, or 5,415 x 7,659 at 150 dpi.
Sources & data
- Dimensions per the relevant standard; see sources.