A4 Envelope Paper Size, Dimensions and Format (US Announcement Envelope series)

A4 Envelope

159 x 108


A4 Envelope


Aspect ratio 1.47:1
Perimeter (P) 534 mm
Diagonal (d) 192.21 mm
Area (A) 17,172 mm²


The A4 Envelope format measures 159 x 108 mm or 6.3 x 4.3 inches. An A4 Envelope paper fromat has an aspect ratio of 1.47:1. The Area of the A4 Envelope paper size is 17,172 mm² or 27.09 in² with a perimeter of 534 mm or 21.20 in. An A4 Envelope format has a diagonal length of 192.21 mm or 7.63 in. The A4 Envelope size belongs to the US Announcement Envelope series. In the US Announcement Envelope series there are a total of 9 paper sizes.

Frequently Asked Questions

The size of an A4 Envelope paper is 159 x 108 mm

The size of an A4 Envelope paper in inches is 6.3 x 4.3 in

The half size of an A4 Envelope paper is 79.5 x 54 mm or 3.15 x 2.15 in

The aspect ratio of an A4 Envelope is 1.47:1

The area of an A4 Envelope paper is 17,172 mm or 27.09 in

The perimeter of an A4 Envelope paper is 534 mm or 21.20 in

The diagonal measurement of A4 Envelope paper is 192.21 mm or 7.63 in

Other US Announcement Envelope Paper Sizes →

There are a total of 9 US Announcement Envelope Paper Sizes.