Envelopes Sizing Guide

The following are the standard size names of envelopes and their respective dimensions:

A1 - 9.21 cm x 13.02 cm / 3.625 in. x 5.125 in.

A2 - 11.11 cm x 14.61 cm / 4.375 in. x 5.75 in.

A6 - 12.07 cm x 16.51 cm / 4.75 in. x 6.5 in.

A7 - 13.34 cm x 18.42 cm / 5.25 in. x 7.25 in.

A8 - 13.97 cm x 20.64 cm / 5.5 in. x 8.125 in.

A9 - 14.61 cm x 22.23 cm / 5.75 in. x 8.75 in.

A10 - 15.24 cm x 24.13 cm / 6 in. x 9.5 in.

#10 / #10 Policy - 10.48 cm x 24.13 cm / 4.125 in. x 9.5 in.

5SQ - 12.7 cm x 12.7 cm / 5 in. x 5 in.

5.5SQ - 13.97 cm x 13.97 cm / 5.5 in. x 5.5 in.

6SQ - 15.24 cm x 15.24 cm / 6 in. x 6 in.

6.5SQ - 16.51 cm x 16.51 cm / 6.5 in. x 6.5 in.