Base Size

inch

×

cm

×

Units:

Important Note:

For practical measuring and cutting purposes:

Imperial measurements are shown in ⅛ inch fractions
Metric measurements are rounded to the nearest millimeter

More precise decimal values can be found in the calculator view.

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A1

US Envelope Sizes

13 × 9.2 cm

5 ⅛ x 3 ⅝ inches

13cm

5 ⅛ inches

9.2cm

3 ⅝ inches