What size are wedding invitations? The most common wedding invitation size in the United States is 5 × 7 inches. It usually fits an A7 envelope measuring approximately 5.25 × 7.25 inches. This format gives names and event details enough room while remaining familiar to printers, stationers, and mailing services.
Five by seven is not the only option. Compact, square, slim, oversized, arch, and custom-shaped invitations can all work when the envelope, design, inserts, and postage are planned together. Use this guide before choosing a design from our wedding invitation card sets.
Standard Wedding Invitation Size Chart
| Invitation style | Typical card size | Common envelope size | Best use |
|---|---|---|---|
| Compact A6 | 4.5 × 6.25 in | 4.75 × 6.5 in | Minimal wording and intimate weddings |
| Standard A7 | 5 × 7 in | 5.25 × 7.25 in | Most wedding invitation suites |
| Square | 5 × 5 in | About 5.25 × 5.25 in | Modern or artistic layouts |
| Slim | About 4 × 9.25 in | About 4.25 × 9.5 in | Editorial and vertical typography |
| Large | 6 × 8 in | About 6.25 × 8.25 in | Long wording or statement designs |
| A10 large format | About 5.75 × 9.25 in | About 6 × 9.5 in | Formal multi-line presentations |
Dimensions vary by manufacturer and custom design. Always compare the actual finished card and envelope measurements before ordering or printing.
Why Is 5 × 7 the Standard Wedding Invitation Size?
A 5 × 7 invitation offers a practical balance of readability, visual presence, envelope availability, and design flexibility. It has room for the couple’s names, host or request line, date, time, venue, city, and a short reception note without requiring very small typography.
The format also works in portrait or landscape orientation and can support paper, acrylic, vellum, photos, foil, botanical borders, and arch-shaped cuts. The familiar A7 envelope gives the card enough clearance without creating excessive empty space.
What Size Envelope Fits a 5 × 7 Wedding Invitation?
A 5 × 7 card normally fits an A7 envelope measuring 5.25 × 7.25 inches. In U.S. stationery terminology, “A7 envelope” refers to this invitation envelope size; it should not be confused with the smaller ISO A7 paper standard used in other countries.
The envelope is approximately one-quarter inch larger in both overall width and height than the card. That clearance lets the invitation slide in without bending corners. A thick stack, acrylic card, wrap, liner, ribbon, or wax seal may require more room, so test the entire assembled suite instead of the main card alone.
What Size Are RSVP and Details Cards?
Enclosure cards are usually smaller than the main invitation so guests can see the visual hierarchy immediately.
| Card | Common approximate size | What it holds |
|---|---|---|
| RSVP card | 3.5 × 5 in | Accepts or declines, names, meals, and deadline |
| Details card | 4.25 × 5.5 in | Website, travel, accommodations, attire, and transport |
| Reception card | 4.25 × 5.5 in | Separate reception time and venue |
| Small website card | About 3.5 × 2 in | Short URL or QR code and RSVP date |
These dimensions are examples rather than rules. The inserts should fit comfortably inside the main envelope and create a descending stack without covering the couple’s names or essential date.
Portrait or Landscape Wedding Invitations
Portrait orientation
Portrait 5 × 7 invitations are common because they support traditional centered wording, monograms, floral borders, arch cuts, and vertical name treatments. They also stack naturally with smaller enclosure cards.
Landscape orientation
Landscape invitations work well for panoramic photos, long horizontal names, venue illustrations, and modern editorial layouts. Confirm that the address and envelope orientation remain clear and that any design shown online matches the printed direction.
What Size Are Arch Wedding Invitations?
Many arch invitations begin with the same 5 × 7 rectangular footprint and use a rounded or shaped top. Because the widest and tallest points remain within that footprint, the card can often fit a standard A7 envelope.
Not every custom arch uses identical dimensions. A high arch, asymmetrical cut, layered backing card, ribbon, or wax seal can change the required envelope. Confirm the finished measurements listed on the product page.
What Size Are Acrylic Wedding Invitations?
Acrylic invitations commonly use a 5 × 7 footprint, but the thickness and rigidity matter as much as the width and height. A 5 × 7 acrylic card may fit inside an A7 envelope while still requiring a sturdier envelope, protective layer, outer mailer, or different postage classification.
Thin acrylic can feel lighter and more flexible; thicker acrylic feels more substantial but adds weight and rigidity. Review our acrylic wedding invitation thickness and mailing guide before finalizing the package. You can also compare styles in the acrylic invitations collection.
Are Square Wedding Invitations More Expensive to Mail?
Square invitations may require additional postage in the United States because their shape can be considered nonmachinable. The price depends on the complete mailpiece, not only the card. Weight, dimensions, aspect ratio, rigidity, thickness, clasps, wax seals, and uneven embellishments can all affect classification.
Take one finished suite to a USPS counter and confirm the current requirement before buying stamps. A beautiful custom shape should be evaluated with its real envelope and every insert included.
How Does Invitation Size Affect Postage?
Size can change both the envelope category and the weight of the finished suite. A large card often requires a larger envelope and heavier paper. A compact card may still cost more if it is square, rigid, thick, or decorated externally.
USPS evaluates the assembled piece. Before mailing:
- Place every card and accessory inside the final envelope.
- Seal or close it exactly as guests will receive it.
- Measure the length, height, and thickness.
- Weigh the complete piece.
- Ask whether it qualifies as a letter, nonmachinable letter, large envelope, or package.
- Mail one test before sending the full batch.
How Much Text Fits on a 5 × 7 Invitation?
A 5 × 7 card can comfortably hold the core ceremony information when the wording is concise. Long hotel notes, directions, registry information, transportation schedules, and multiple RSVP methods should move to a details card or wedding website.
If the text requires a very small font, the solution is usually fewer words or an enclosure card—not a larger main invitation. Readability matters more than fitting every detail onto one surface. Our wedding invitation wording guide shows how to keep the main text focused.
How to Choose the Best Wedding Invitation Size
Consider the amount of wording
Traditional host lines and spelled-out dates need more vertical space. Modern wording can fit a smaller or more design-forward card.
Consider the material
Paper, acrylic, vellum, layered backing, and pocket folders behave differently at the same dimensions. Evaluate weight, flexibility, edges, and protection.
Consider the guest experience
The invitation should be easy to hold, read, store, and bring to the wedding if guests need directions. Very small cards can feel elegant but leave little room for accessible type.
Consider the complete suite
A main card, RSVP card, details card, liner, wrap, seal, and flower create a much thicker package than one printed card. Start with the wedding invitation suite checklist before choosing the envelope.
Consider the mailing plan
If budget and easy mailing are priorities, a familiar rectangular format is usually simpler than square, oversized, rigid, or heavily embellished alternatives.
Invitation Design and Print-Safety Tips
- Ask the printer for the exact trim size, bleed, and safe area.
- Keep names and critical text away from cut edges and shaped corners.
- Use a font size that remains readable on the printed sample.
- Check contrast on clear, frosted, colored, and patterned backgrounds.
- Scan any QR code at its final printed size.
- Print one physical proof when designing outside the seller’s template.
- Confirm that the envelope accommodates the complete stack.
Screen measurements are not a substitute for a printed sample. Device scaling can make type and spacing appear larger than they will be on the physical card.
Frequently Asked Questions
What is the most common wedding invitation size?
Five by seven inches is the most common wedding invitation size in the United States. It usually pairs with a 5.25 × 7.25-inch A7 envelope.
Can a 5 × 7 invitation use a regular stamp?
Possibly, but size alone does not decide postage. Weight, thickness, rigidity, shape, and embellishments must also qualify. Have one complete suite checked before buying stamps.
What envelope fits a 5 × 7 card?
An A7 invitation envelope measuring approximately 5.25 × 7.25 inches is the standard match. Thick or layered suites may need additional clearance.
Is A7 the same as 5 × 7?
In U.S. invitation terminology, the card is commonly 5 × 7 and the matching A7 envelope is approximately 5.25 × 7.25. The names refer to related but different dimensions.
Should details cards be smaller than the invitation?
Usually, yes. Smaller enclosure cards create a clear hierarchy, fit the envelope, and let the main invitation remain visible at the bottom of the stack.
What size should a wedding invitation QR code be?
The correct size depends on the design, print quality, and scanning distance. Many printed suites use a code around 1–1.25 inches, but always test the exact printed proof with multiple phones and include a short URL.
Choose the Format Before Finalizing the Design
The safest starting point for many couples is a 5 × 7 card with an A7 envelope. From there, choose the orientation, material, inserts, and decorative details that fit the wedding style and mailing budget.
Ready to compare formats? Browse LunaInvites custom wedding invitations or visit the Design Studio to personalize the layout, wording, colors, and monogram before approving the digital proof.