ENVELOPE SIZE CHARTS
Complete Envelope Size Charts: Your Ultimate Envelope Size Guide
Envelopes serve essential communication needs across business and personal correspondence. This guide provides comprehensive envelope size charts with standard envelope dimensions, measurements, and specifications to help you select the right option for your documents and mailings. From #10 business envelopes and A7 invitation envelopes to 6×9 booklet envelopes, 9×12 booklet envelopes, legal-size envelopes, and catalog envelopes, our envelope size charts include detailed comparisons of common envelope sizes, USPS mailing standards, and printable PDF templates to ensure you find the perfect fit for your mailing needs.
Most common envelope sizes:
Business and Personal Correspondence Envelope Size Chart
The following chart showcases the most Common Envelope Sizes used for both business and personal mail. These style envelopes feature traditional flap style construction and are perfect for everyday correspondence.
| Paper Envelope Type | Paper Envelope Size | EnvyPak Clear Envelope |
|---|---|---|
| 6 ¼ | 3.5 inches by 6 inches | 16611- 4.00(h) x 6.00(w) |
| 6 ¾ | 3.625 inches by 6.5 inches | 17206 – 4.75(h) x 6.50(w) |
| 8 5/8 | 3.625 inches by 8.625 inches | 15550 – 4.50(h) x 8.63(w) |
| 7 | 3.75 inches by 6.75 inches | NA |
| 7 ¾ (Monarch) | 3.875 inches by 7.5 inches | 16102 – 4.00(h) x 7.50(w) |
| 9 | 3.875 inches by 8.875 inches | 14892 – 5.38(h) x 8.75(w) |
| 9 (for policies) | 4 inches by 9 inches | 15239 – 4.25(h) x 9.00(w) |
| 10 | 4.125 inches by 9.5 inches | 12777 – 4.19(h) x 9.50(w) IN STOCK |
| DL | 4.313 inches by 8.625 inches | 15550 – 4.50(h) x 8.63(w) |
| 11 | 4.5 inches by 10.375 inches | 16583 – 4.50(h) x 10.50(w) |
| 12 | 4.75 inches by 11 inches | 16970 – 4.81(h) x 11.25(w) |
| 14 | 5 inches by 11.5 inches | 15789 – 5.25(h) x 11.50(w) |
| 16 | 6 inches by 12 inches | 15275 – 6.00(h) x 12.00(w) |
Key Standards: The #10 envelope size serves as the standard business envelope, while the #9 envelope size functions as the standard reply envelope for business communication. These Size Envelopes meet Postal Service requirements and provide excellent branding opportunities.
Catalog Envelopes Chart
For mailing heavyweight materials and important documents, catalog envelopes offer superior durability. These Open End Envelopes feature side seam construction and are ideal for materials that require protection during transit.
| Paper Envelope Type | Paper Envelope Size | EnvyPak Clear Envelope |
|---|---|---|
| 1 | 6 inches by 9 inches | 12776 – 6.00(h) x 9.00(w) IN STOCK |
| 1 ¾ | 6.5 inches by 9.5 inches | 16295 – 6.50(h) x 9.50(w) |
| 3 | 7 inches by 10 inches | 13829 – 7.00(h) x 10.00(w) |
| 6 | 7.5 inches by 10.5 inches | 17547 – 7.50(h) x 10.63(w) |
| 8 | 8.25 inches by 11.25 inches | 16332 – 8.25(h) x 11.38(w) |
| 9 ¾ | 8.75 inches by 11.25 inches | 15375 – 9.00(h) x 11.25(w) |
| 10 ½ | 9 inches by 12 inches | 12855 – 9.00(h) x 12.00(w) IN STOCK |
| 12 ½ | 9.5 inches by 12.5 inches | 13739 – 12.50(h) x 9.50(w) |
| 13 ½ | 10 inches by 13 inches | 14672 – 13.00(h) x 10.00(w) |
| 14 ½ | 11.5 inches by 14.5 inches | 16419 – 11.63(h) x 14.25(w) |
| 15 | 10 inches by 15 inches | 16757 – 10.50(h) x 15.00(w) |
| 15 ½ | 12 inches by 15.5 inches | 16790 – 11.00(h) x 15.63(w) |
Popular Choices: The 10 ½ and 13 ½ catalog envelopes represent the most commonly used sizes in this category, perfect for legal documents and business mailings that require the right size for unfolded materials.
Booklet Envelopes Chart
Businesses frequently utilize booklet envelopes for sending brochures, sales materials, and annual reports. These open-side envelopes provide easy access and professional presentation for business communication.
| Paper Envelope Type | Paper Envelope Size | EnvyPak Clear Envelope |
|---|---|---|
| 3 | 4.75 inches by 6.5 inches | 17206 – 4.75(h) x 6.50(w) |
| 4 ½ | 5.5 inches by 7.5 inches | 13204 – 5.50(h) x 7.50(w) IN STOCK |
| 5 | 5.5 inches by 8.125 inches | 15447 – 5.50(h) x 8.25(w) |
| 6 | 5.75 inches by 8.875 inches | 16559 – 6.50(h) x 8.75(w) |
| 6 ½ | 6 inches by 9 inches | 12776 – 6.00(h) x 9.00(w) IN STOCK |
| 6 5/8 | 6 inches by 9.5 inches | 13443 – 6.00(h) x 9.50(w) |
| 6 ¾ | 6.5 inches by 9.5 inches | 16295 – 6.50(h) x 9.50(w) |
| 7 ¼ | 7 inches by 10 inches | 13829 – 10.00(h) x 7.00(w) |
| 7 ½ | 7.5 inches by 10.5 inches | 17547 – 7.50(h) x 10.63(w) |
| 9 | 9.75 inches by 11.5 inches | 15406 – 9.50(h) x 11.50(w) |
| 9 ½ | 9 inches by 12 inches | 12855 – 9.00(h) x 12.00(w) IN STOCK |
| 10 | 9.5 inches by 12.625 inches | 17296 – 9.75(h) x 12.50(w) |
| 13 | 10 inches by 13 inches | 14672- 13.00(h) x 10.00(w) |
Industry Standards: The 9 ½ and 13 booklet envelopes serve as standard sizes, offering a variety of sizes to accommodate different business materials and ensuring the best experience for recipients.
Announcement Envelopes Chart
Announcement envelopes are ideal for sending greeting cards, promotional materials, photographs, and small booklets. Sometimes you will see those called “A-style” envelopes.
| Paper Envelope Type | Paper Envelope Size | EnvyPak Clear Envelope |
|---|---|---|
| A2 | 4.375 inches by 5.75 inches | 14816 – 5.13(h) x 4.50(w) |
| A6 | 4.75 inches by 6.5 inches | 17206 – 4.75(h) x 6.50(w) |
| A7 | 5.25 inches by 7.25 inches | 13204 – 5.50(h) x 7.50(w) IN STOCK |
| A8 | 5.5 inches by 8.125 inches | 15447 – 5.50(h) x 8.25(w) |
| A9 | 5.75 inches by 8.875 inches | 16559 – 6.25(h) x 8.75(w) |
| A10 | 6 inches by 9.5 inches | 13443 – 6.00(h) x 9.50(w) |
Baronial Envelopes Chart
Baronial envelopes feature deep-pointed flaps and are extremely popular for formal invitations and announcements. These Flap Envelopes offer distinctive styling with diagonal seams that create an elegant appearance.
| Paper Envelope Type | Paper Envelope Size | EnvyPak Clear Envelope |
|---|---|---|
| 4 BAR | 3.625 inches by 5.125 inches | 13995 – 3.75(h) x 5.00(w) |
| 5 ½ BAR | 4.375 inches by 5.75 inches | 14816 – 5.13(h) x 4.50(w) |
| 6 BAR / Walton Outside | 4.75 inches by 6.5 inches | 17206 – 4.75(h) x 6.50(w) |
| Lee | 5.25 inches by 7.25 inches | 13204 – 5.50(h) x 7.50(w) IN STOCK |
| Professional | 2.125 inches by 3.625 inches | 15578 – 2.19(h) x 3.75(w) |
| Gladstone | 3.563 inches by 5.562 inches | 13995 – 3.75(h) x 5.00(w) |
| 16 | 2.375 inches by 3.375 inches | 15522 – 2.88(h) x 3.75(w) |
| 17 | 2.6875 inches by 3.6875 inches | 15522 – 2.88(h) x 3.75(w) |
| Monona Inside | 5.25 inches by 7.5 inches | 16325 – 5.25(h) x 7.50(w) |
| Monona Outside | 5.5 inches by 7.75 inches | 16998 – 5.38(h) x 7.81(w) |
A-Series Envelope Sizes Chart
The A-series envelopes conform to the globally recognized ISO 216 standard and are increasingly popular among businesses and individuals worldwide. This Envelope Sizing system provides consistent Card Sizes that work internationally.
| Paper Envelope Type | Paper Envelope Size | EnvyPak Clear Envelope |
|---|---|---|
| A0 | 33.1 inches by 46.8 inches | NA |
| A1 | 23.4 inches by 33.1 inches | NA |
| A2 | 16.5 inches by 23.4 inches | NA |
| A3 | 11.7 inches by 16 ½ inches | 13842 – 12.13(h) x 16.88(w) |
| A4 | 8.3 inches by 11.7 inches | 16957 – 8.50(h) x 11.50(w) |
| A5 | 5.8 inches by 8.3 inches | 15447 – 5.50(h) x 8.25(w) |
| A6 | 4.1 inches by 5.8 inches | 16611- 4.00(h) x 6.00(w) |
| A7 | 2.9 inches by 4.1 inches | 15899 – 2.75(h) x 4.00(w) |
| A8 | 2 inches by 2.9 inches | 16584 – 3.88(h) x 3.13(w) |
| A9 | 1.5 inches by 2 inches | NA |
| A10 | 1 inch by 1.5 inches | NA |
Pro Tip: A5 and A4 represent the most popular A-series envelopes. An A4 sheet folded in half fits perfectly into an A5 envelope, while unfolded A4 documents require A4 envelopes.
Square Envelopes Chart
Square envelopes provide the perfect envelope solution for unique invitations and special mailings. These envelope styles offer distinctive presentation options that stand out from traditional rectangular formats.
| Paper Envelope Type | Paper Envelope Size | EnvyPak Clear Envelope |
|---|---|---|
| 5 Square | 5 inches by 5 inches | 15559 – 5.00(h) x 5.00(w) |
| 5 ½ Square | 5.5 inches by 5.5 inches | 10598 – 5.50(h) x 5.50(w) |
| 6 Square | 6 inches by 6 inches | 13249 – 6.188(h) x 6.00(w) |
| 6 ½ Square | 6.5 inches by 6.5 inches | 14020 – 6.00(h) x 6.25(w) |
| 7 Square | 7 inches by 7 inches | 13607 – 7.00(h) x 7.00(w) |
| 7 ½ Square | 7.5 inches by 7.5 inches | 17179 – 7.50(h) x 7.50(w) |
| 8 Square | 8 inches by 8 inches | 15688 – 8.00(h) x 8.00(w) |
| 8 ½ Square | 8.5 inches by 8.5 inches | 13565 – 8.44(h) x 8.44(w) |
| 9 Square | 9 inches by 9 inches | 10306 – 9.00(h) x 9.00(w) |
| 9 ½ Square | 9.5 inches by 9.5 inches | 17065 – 9.50(h) x 9.50(w) |
Comprehensive Guide to Envelope Types and Applications
Commercial Envelopes and Business Applications
Banker Envelopes: The most popular envelope type in the United States, featuring triangular flaps and suitable for both business and personal use. These Commercial Envelopes provide excellent branding opportunities and meet postal regulations.
Window Envelopes: Frequently used for billing and remittance envelopes, these feature transparent windows that display return addresses, saving time in business mailings. The post office readily accepts these for efficient processing.
Policy Envelopes: Specialized envelopes designed for insurance documents and legal papers, offering secure handling of important documents with proper wallet flap construction.
Specialty Envelope Categories
Mailers and Protective Options: Including padded mailers and bubble mailers, these provide enhanced protection during transit, especially valuable for fragile items requiring extra security through the Postal Service network.
Disc Envelopes: Specifically designed for CD or DVD mailing, these specialty envelopes ensure proper protection for digital media during shipping.
Pocket Envelopes: Compact options perfect for Business Card storage, coupons, photographs, and receipts, providing convenient sizing for small items.
Wallet Envelopes: Featuring straight flaps that enable automatic insertion in mailing machines, these are essential for direct mail campaigns and business communication systems. The Commercial Flap design supports efficient processing.
Catalog Envelopes: Popular choice for businesses mailing reports, catalogs, and magazines. Job seekers often utilize larger sizes like 9″ x 12″ or 10″ x 13″ to mail resumes without folding, ensuring professional presentation.
Standard Envelope Dimensions and Postal Guidelines
Understanding Standard Sizes
No single “standard” mailing envelope exists, but popularity-based standards emerge from Common Envelope Sizes usage patterns. The #10 envelope size and #9 envelope size represent the most widely accepted standards in business communication.
Letter-Size Compatibility
In the United States, standard letter paper measures 8.5 inches by 11 inches. The #10 envelope accommodates folded letter paper perfectly, making it the preferred choice for routine business correspondence. Companies preferring unfolded document presentation often select larger catalog envelopes instead.
Professional Document Protection
For safeguarding important documents and legal papers, consider adhesive sleeves and protectors. These Custom Envelope solutions offer archival-safe materials ensuring document preservation while providing professional presentation.
Selecting the Perfect Envelope: Quick Reference Guide
Consider Your Specific Needs
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Document Size: Choose envelope dimensions that accommodate your materials without excessive folding
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Professional Image: Select envelope styles that reflect your brand and business standards
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Postal Requirements: Ensure selected sizes meet Postal Service regulations and Phone Number visibility requirements
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Special Features: Determine if you need window visibility, security features, or special flap configurations
Application-Specific Recommendations
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Business Communication: #10 envelopes for standard letters, catalog envelopes for unfolded documents
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Special Occasions: Baronial or announcement envelopes for invitations and formal communications
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International Correspondence: A-series envelopes for global compatibility
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Marketing Materials: Booklet envelopes for brochures and promotional materials
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Secure Documents: Policy or catalog envelopes for legal documents and important papers
Digital Age Considerations
Modern envelope selection should account for swipe gestures in mobile scanning applications and digital tracking requirements. Many businesses now integrate QR codes and tracking elements into their envelope designs for enhanced customer experience.
This comprehensive Envelope Size Guide ensures you’ll find the right envelope size for any application, from everyday business communication to special occasion announcements. Whether you need Commercial Envelopes for routine mailings or specialty envelopes for unique requirements, understanding these variety of sizes helps ensure professional presentation and postal compliance.
