ISO C series (envelopes)
Invite envelope size
Invite envelope measures 220 x 220 mm (8.66 x 8.66 in). Part of the ISO C series (envelopes).
Dimensions in every unit
| Unit | Width x height |
|---|---|
| Millimetres | 220 x 220 mm |
| Centimetres | 22 x 22 cm |
| Inches (decimal) | 8.661 x 8.661 in |
| Inches (fraction) | 8 11/16 x 8 11/16 in |
| Points (1/72 in) | 623.6 x 623.6 pt |
| Picas | 51.97 x 51.97 pc |
Pixel dimensions by resolution
| Resolution | Pixels | Megapixels |
|---|---|---|
| 72 dpi | 624 x 624 px | 0.4 MP |
| 96 dpi | 831 x 831 px | 0.7 MP |
| 150 dpi | 1,299 x 1,299 px | 1.7 MP |
| 200 dpi | 1,732 x 1,732 px | 3 MP |
| 300 dpi | 2,598 x 2,598 px | 6.8 MP |
| 600 dpi | 5,197 x 5,197 px | 27 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) | 226 x 226 mm | 8.898 x 8.898 in |
| 0.125 in bleed (each side) | 226.4 x 226.4 mm | 8.911 x 8.911 in |
How many Invite envelope fit on a press sheet
| Sheet | Without bleed | With 3 mm bleed |
|---|---|---|
| A3 | 1-up | 1-up |
| SRA3 | 2-up | 1-up |
| Tabloid 11 x 17 in | 1-up | 1-up |
| 12 x 18 in | 2-up | 2-up |
| 13 x 19 in (Super B) | 2-up | 2-up |
| B2 (offset) | 6-up | 6-up |
| B1 (offset) | 12-up | 12-up |
Simple grid imposition with no gutters or gripper margin; real layouts may fit fewer.
The √2 system
Invite envelope has an aspect ratio of 1 : 1 — 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 Invite envelope?
How many pixels is Invite envelope at 300 DPI?
Sources & data
- Listed in the Wikipedia article “Paper size” (CC BY-SA 4.0).