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Resources: Envelope Size Chart

Social Envelopes

Announcement envelopes, are also called A-style envelopes.
They are ideal for stationery, cards, invitations, photographs, greeting cards, small booklets, etc.

TYPE

SIZE

Suggested Enclosure

A-2

4.375" x 5.75"

4.25" x 5.5"(post cards, note cards)

A-6

4.75" x 6.5"

4.625" x 6.25" (notes, 4"x6" photos)

A-7

5.25" x 7.25"

5.125" x 7" (5x7"photo cards, invitations )

A-8

5.5" x 8.125"

5.375" x 7.875" (5x8" cards & invitations)

A-9

5.75" x 8.75"

5.5" x 8.5" (greeting cards)

A-10

6" x 9.5"

5.875" x 9.25" (invitations, panel cards)


Business Envelopes for Office or Personal Correspondence

 
In the US, the popular business envelope is the standard #10 Envelope.
It has become popular for both commercial and social designs.
The #10 envelope can hold a tri-fold letterhead or brochure, a 3UP certificate or card

Business Envelope Sizes

Name

Size in inches

Size in millimeters

Suggested Enclosure

 

No. 6¼

3 1/2 in x 6 in

(3.5" x 6")

89 x 152 mm

3.25" x 5.75"

 

No. 6¾

3 5/8 in x 6 1/2 in (3.625" x 6.5")

92 x 165 mm

3.5" x 6.25"

 

No. 8

3 7/8 in x 7 1/2 in (3.875" x 7.5")

98 x 190 mm

3.75" x 7.25"

 

No. 9

3 7/8 in x 8 7/8 in (3.875" x 8.875")

98 x 225 mm

3.75" x 8.625"

 

No. 10

4 1/8 in x 9 1/2in (4.125" x 9.5")

105 x 241 mm

4" x 9.25"

 

No. 11

4 1/2 in x 10 3/8 in (4.5" x 10.375")

114 x 263 mm

4.25" x 10.125"

 

No. 12

4 3/4 in x 11 in

(4.75" x 11")

120 x 279 mm

4.5" x 10.75"

 

No. 14

5 in x 11 1/2 in

(5" x 11.5")

127 x 292 mm

4.75" x 11.25"

 

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