12 Envelope Paper Size, Dimensions and Format (US Commercial Envelope series)

12 Envelope in millimetres

279 x 121 mm


12 Envelope-paper-size


Aspect ratio 2.31:1
Area (A) 33,759 mm²
Perimeter (P) 800 mm
Diagonal (d) 304.11 mm


The 12 Envelope format measures 279 x 121 mm or inches. An 12 Envelope paper fromat has an aspect ratio of 2.31:1. The Area of the 12 Envelope paper size is 33,759 mm² or 52.80 in² with a perimeter of 800 mm or 31.60 in. An 12 Envelope format has a diagonal length of 304.11 mm or 12 in. The 12 Envelope size belongs to the US Commercial Envelope series. In the US Commercial Envelope series there are a total of 11 paper sizes.

Other US Commercial Envelope Paper Sizes

There are a total of 11 US Commercial Envelope Paper Sizes.