Envelope Size Chart

Envelopes are most commonly converted from the 'text' weight papers.  Weight is important for many reasons.  Thickness represents a nice quality and durability, but can also add to the weight of your mailing in which you may incur additional postage.  It is important to determine the purpose of your project and potential weight of the complete mailing.  For paper weight info, be sure to see our 'paper weight info' page & chart.

ENVELOPE SIZE CHART AND DESCRIPTIONS:

(Chart provided for information purposes, we do not stock all dimensions listed below)

Learn the anatomy of an envelope: Top fold, side seam, envelope throat, seam overlap, etc. -- view the envelope anatomy

Another view, checkout our ENVELOPE CHART which shows envelopes ranging Smaller --> to --> Larger.

commercial envelope
business square flap envelope

wallet flap envelope

side seam envelope

policy envelope

Business & Correspondence

Office / Commercial envelopes, widely used for a variety of business and personal correspondence. Commercial and Side Seam flap styles are ideal for machine insertion. Wallet flaps provide a large area ideal for imprinting. Square flaps are contemporary, but not recommended for machine insertion.

In the United States the popular business envelope is the standard #10 Envelope. With options such as Square Flap, Policy and commercial flap - it has become popular for both commercial and social designs. The #10 envelope that has a square flap can create a unique look to the "so called" common envelope.

TYPE SIZE Suggested Enclosure
(varies according to insert thickness)
6 1/4 Comm
6 1/4 Remit
inches: 3.5 x 6 (mm: 88.9 x 152.4) inches: 3.25 x 5.75 (mm: 82.55 x 146.05)
6 3/4 inches: 3.625 x 6.5 (mm: 92.075 x 165.1) inches: 3.5 x 6.25 (mm: 88.9 x 158.75)
8 5/8 inches: 3.625 x 8.625 (mm: 92.075 x 219.075) inches: 3.5 x 8.375 (mm: 88.9 x 212.725)
7 inches: 3.75 x 6.75 (mm: 95.25 x 171.45) inches: 3.5 x 6.5 (mm: 88.9 x 165.1)
Monarch (7 3/4) inches: 3.875 x 7.5 (mm: 98.425 x 190.5) inches: 3.75 x 7.25 (mm: 95.25 x 184.15)
9 inches: 3.875 x 8.875 (mm: 98.425 x 225.425) inches: 3.75 x 8.625 (mm: 95.25 x 219.075)
9 (policy) inches: 4 x 9 (mm: 101.6 x 228.6) inches: 3.75 x 8.5 (mm: 95.25 x 215.9)
10 inches: 4.125 x 9.5 (mm: 104.775 x 241.3) inches: 4 x 9.25 (mm: 101.6 x 234.95)
DL inches: 4.313 x 8.625 (mm: 109.5502 x 219.075) inches: 4.125 x 8.375 (mm: 104.775 x 212.725)
11 inches: 4.5 x 10.375 (mm: 114.3 x 262.525) inches: 4.25 x 10.125 (mm: 107.95 x 257.175)
12 inches: 4.75 x 11 (mm: 120.65 x 279.4) inches: 4.5 x 10.75 (mm: 114.3 x 273.05)
14 inches: 5 x 11.5 (mm: 127 x 292.1) inches: 4.75 x 11.25 (mm: 120.65 x 285.75)
16 inches: 6 x 12 (mm: 152.4 x 304.8) inches: 5.75 x 11.75 (mm: 146.05 x 298.45)
 booklet envelope Booklet
Booklet envelopes, constructed with side seam, is ideal for annual reports, brochures, sales materials, and a variety of printed material. The open side makes it acceptable for automatic insertion and ideal for volume mailing.
TYPE SIZE Suggested Enclosure
(varies according to insert thickness)
3 inches: 4.75 x 6.5 (mm: 120.65 x 165.1) inches: 4.5 x 6 (mm: 114.3 x 152.4)
4 1/2 inches: 5.5 x 7.5 (mm: 139.7 x 190.5) inches: 5.25 x 7 (mm: 133.35 x 177.8)
5 inches: 5.5 x 8.125 (mm: 139.7 x 206.375) inches: 5.25 x 7.625 (mm: 133.35 x 193.675)
6 inches: 5.75 x 8.875 (mm: 146.05 x 225.425) inches: 5.5 x 8.375 (mm: 139.7 x 212.725)
6 1/2 inches: 6 x 9 (mm: 152.4 x 228.6) inches: 5.75 x 8.5 (mm: 146.05 x 215.9)
6 5/8 inches: 6 x 9.5 (mm: 152.4 x 241.3) inches: 5.75 x 9 (mm: 146.05 x 228.6)
6 3/4 inches: 6.5 x 9.5 (mm: 165.1 x 241.3) inches: 6.25 x 9 (mm: 158.75 x 228.6)
7 1/4 inches: 7 x 10 (mm: 177.8 x 254) inches: 6.75 x 9.5 (mm: 171.45 x 241.3)
7 1/2 inches: 7.5 x 10.5 (mm: 190.5 x 266.7) inches: 7.25 x 10 (mm: 184.15 x 254)
9 inches: 8.75 x 11.5 (mm: 222.25 x 292.1) inches: 8.5 x 11 (mm: 215.9 x 279.4)
9 1/2 inches: 9 x 12 (mm: 228.6 x 304.8) inches: 8.75 x 11.5 (mm: 222.25 292.1)
10 inches: 9.5 x 12.625 (mm: 241.3 x 320.675) inches: 9.25 x 12.125 (mm: 234.95 x 307.975)
13 inches: 10 x 13 (mm: 254 x 330.2) inches: 9.75 x 12.5 (mm: 247.65 x 317.5)
 
 catalog envelope Catalog
Catalog envelopes, constructed with center seam which makes them more durable for mailing heavy-weight materials. Made for catalogs, large booklets and other heavy enclosures. These envelopes can not be processed through inserting equipment or run through a laser printer.
TYPE SIZE Suggested Enclosure
(varies according to insert thickness)
1 inches: 6 x 9 (mm: 152.4 x 228.6) inches: 5.75 x 8.75 (mm: 146.05 x 222.25)
1 3/4 inches: 6.5 x 9.5 (mm: 165.1 x 241.3) inches: 6.25 x 9 (mm: 158.75 x 228.6)
3 inches: 7 x 10 (mm: 177.8 x 254) inches: 6.75 x 9.5 (mm: 171.45 x 241.3)
6 inches: 7.5 x 10.5 (mm: 190.5 x 266.7) inches: 7.25 x 10 (mm: 184.15 x 254)
8 inches: 8.25 x 11.25 (mm: 209.55 x 285.75) inches: 8 x 10.75 (mm: 203.2 x 273.05)
9 3/4 inches: 8.75 x 11.25 (mm: 222.25 x 285.75) inches: 8.5 x 10.75 (mm: 215.9 x 273.05)
10 1/2 inches: 9 x 12 (mm: 228.6 x 304.8) inches: 8.75 x 11.5 (mm: 222.25 292.1)
12 1/2 inches: 9.5 x 12.5 (mm: 241.3 x 317.5) inches: 9.25 x 12 (mm: 234.95 x 304.8)
13 1/2 inches: 10 x 13 (mm: 254 x 330.2) inches: 9.75 x 12.5 (mm: 247.65 x 317.5)
14 1/2 inches: 11.5 x 14.5 (mm: 292.1 x 368.3) inches: 11.25 x 14 (mm: 285.75 x 355.6)
15 inches: 10 x 15 (mm: 254 x 381) inches: 9.75 x 14.5 (mm: 247.65 x 368.3)
15 1/2 inches: 12 x 15.5 (mm: 304.8 x 393.7) inches: 11.75 x 15 (mm: 298.45 x 381)
 
 square envelopes Square
Square envelopes, constructed with side seams and contemporary square flap. This unusual shape attracts attention. Square envelopes are nonstandard and require additional postage to mail. --learn more about postage variables by visiting the US Postal Service
TYPE SIZE Suggested Enclosure
(varies according to insert thickness)
5 inches: 5 x 5 (mm: 127 x 127) inches: 4.75 x 4.75 (mm: 120.65 x 120.65)
5 1/2 inches: 5.5 x 5.5 (mm: 139.7 x 139.7) inches: 5.25 x 5.25 (mm: 133.35 x 133.35)
6 inches: 6 x 6 (mm: 152.4 x 152.4) inches: 5.75 x 5.75 (mm: 146.05 x 146.05)
6 1/2 inches: 6.5 x 6.5 (mm: 165.1 x 165.1) inches: 6.25 x 6.25 (mm: 158.75 x 158.75)
7 inches: 7 x 7 (mm: 177.8 x 177.8) inches: 6.75 x 6.75 (mm: 171.45 x 171.45)
7 1/2 inches: 7.5 x 7.5 (mm: 190.5 x 190.5) inches: 7.25 x 7.25 (mm: 184.15 x 184.15)
8 inches: 8 x 8 (mm: 203.2 x 203.2) inches: 7.75 x 7.75 (mm: 196.85 x 196.85)
8 1/2 inches: 8.5 x 8.5 (mm: 215.9 x 215.9) inches: 8.25 x 8.25 (mm: 209.55 x 209.55)
9 inches: 9 x 9 (mm: 228.6 x 228.6) inches: 8.75 x 8.75 (mm: 222.25 x 222.25)
9 1/2 inches: 9.5 x 9.5 (mm: 241.3 x 241.3) inches: 9.25 x 9.25 (mm: 234.95 x 234.95)
 
  baronial envelope

baronial envelope anatomy
View Anatomy of the Envelope

Baronial
Baronial envelopes, constructed with a deep pointed flap and diagonal seams. Traditionally used for formal business announcements, invitations and greeting cards. Not recommended for machine insertion.
TYPE SIZE Suggested Enclosure
(varies according to insert thickness)
Professional** inches: 2.125 x 3.625 (mm: 53.975 x 92.075) inches: 2 x 3.5 (mm: 50.8 x 88.9)
#16 (Mrs.)** inches: 2.375 x 3.375 (mm: 60.325 x 85.725) inches: 2.25 x 3.125 (mm: 57.15 x 79.375)
#17 (Mr. & Mrs.)** inches: 2.6875 x 3.6875 (mm: 68.2625 x 93.6625) inches: 2.5625 x 3.5625 (mm: 65.0875 x 90.4875)
Gladstone** inches: 3.563 x 5.562 (mm: 90.5002 x 141.2748) inches: 3.375 x 5.375 (mm: 85.725 x 136.525)
4-Bar (or A1) inches: 3.625 x 5.125 (mm: 92.075 x 130.175) inches: 3.5 x 4.875 (mm: 88.9 x 123.825)
5 1/2-Bar inches: 4.375 x 5.75 (mm: 111.125 x 146.05) inches: 4.25 x 5.5 (mm: 107.95 x 139.7)
6-Bar inches: 4.75 x 6.5 (mm: 120.65 x 165.1) inches: 4.625 x 6.25 (mm: 117.475 x 158.75)
Lee inches: 5.25 x 7.25 (mm: 133.35 x 184.15) inches: 5.125 x 7 (mm: 130.175 x 177.8)
Linwood/Monona Inside inches: 5.25 x 7.5 (mm: 133.35 x 190.5) inches: 5 x 7.25 (mm: 127 x 184.15)
Monona Outside inches: 5.5 x 7.75 (mm: 139.7 x 196.85) inches: 5.25 x 7.5 (mm: 133.35 x 190.5)
** This size is too small to mail.
 
 announcement envelopes Announcement
Announcement envelopes, also called A-style. This popular design is ideal for stationery, photographs, greeting cards, small booklets, and much more. Designed with side seam construction and contemporary square flap. A-Envelopes and Baronial Envelopes can share common sizes - example: 5-1/2 Bar is the same dimension as A2, the defining differences are the flaps and the side seam construction. If these factors are not important to your project, then best to move forward with the envelope offering the most solutions for your active project.
TYPE SIZE Suggested Enclosure
(varies according to insert thickness)
A-2 inches: 4.375 x 5.75 (mm: 111.125 x 146.05 inches: 4.25 x 5.5 (mm: 107.95 x 139.7)
A-6 inches: 4.75 x 6.5 (mm: 120.65 x 165.1) inches: 4.625 x 6.25 (mm: 117.475 x 158.75)
A-7 inches: 5.25 x 7.25 (mm: 133.35 x 184.15) inches: 5.125 x 7 (mm: 130.175 x 177.8)
A-8 inches: 5.5 x 8.125 (mm: 139.7 x 206.375) inches: 5.375 x 7.875 (mm: 136.525 x 200.025)
A-9 inches: 5.75 x 8.75 (mm: 146.05 x 222.25) inches: 5.5 x 8.5 (mm: 139.7 x 215.9)
A-10 inches: 6 x 9.5 (mm: 152.4 x 241.3) inches: 5.875 x 9.25 (mm: 149.225 x 234.95)

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