ISO C series (envelopes)
Italian envelope size
Italian envelope measures 110 x 230 mm (4.33 x 9.06 in). Part of the ISO C series (envelopes).
Dimensions in every unit
| Unit | Width x height |
|---|---|
| Millimetres | 110 x 230 mm |
| Centimetres | 11 x 23 cm |
| Inches (decimal) | 4.331 x 9.055 in |
| Inches (fraction) | 4 5/16 x 9 1/16 in |
| Points (1/72 in) | 311.8 x 652 pt |
| Picas | 25.98 x 54.33 pc |
Pixel dimensions by resolution
| Resolution | Pixels | Megapixels |
|---|---|---|
| 72 dpi | 312 x 652 px | 0.2 MP |
| 96 dpi | 416 x 869 px | 0.4 MP |
| 150 dpi | 650 x 1,358 px | 0.9 MP |
| 200 dpi | 866 x 1,811 px | 1.6 MP |
| 300 dpi | 1,299 x 2,717 px | 3.5 MP |
| 600 dpi | 2,598 x 5,433 px | 14.1 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) | 116 x 236 mm | 4.567 x 9.291 in |
| 0.125 in bleed (each side) | 116.4 x 236.4 mm | 4.581 x 9.305 in |
How many Italian envelope fit on a press sheet
| Sheet | Without bleed | With 3 mm bleed |
|---|---|---|
| A4 | 1-up | 1-up |
| A3 | 3-up | 3-up |
| SRA3 | 4-up | 3-up |
| Letter | 1-up | 1-up |
| Tabloid 11 x 17 in | 3-up | 3-up |
| 12 x 18 in | 4-up | 3-up |
| 13 x 19 in (Super B) | 6-up | 4-up |
| B2 (offset) | 12-up | 12-up |
| B1 (offset) | 27-up | 24-up |
Simple grid imposition with no gutters or gripper margin; real layouts may fit fewer.
The √2 system
Italian envelope has an aspect ratio of 1 : 2.0909 — 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.
This size is listed in the Wikipedia article on paper sizes under “International envelope and insert sizes”. Historic and regional sizes can vary between sources and mills.
Similar sizes
Frequently asked questions
What are the dimensions of Italian envelope?
How many pixels is Italian envelope at 300 DPI?
Sources & data
- Listed in the Wikipedia article “Paper size” (CC BY-SA 4.0).