| Inside: Wedding invitation sizing might not be the first thing on your mind—but trust me, it matters! The wrong size can lead to awkward envelope struggles, unexpected postage costs, and last-minute reprints (yikes!). So, what is the standard wedding invitation size, and how do RSVP cards, save-the-dates, and detail cards fit into the mix? In this guide, we’ll cover everything from choosing the perfect invite dimensions to understanding envelope sizes, ensuring your wedding stationery is as beautiful as your love story. |
Picture this: My best friend hands me her wedding invitation, and it’s stunning. Dreamy watercolor florals, delicate gold foil, and the kind of elegant calligraphy that makes you swoon. But then—disaster.
It didn’t fit inside the envelope.
She had unknowingly picked an oversized invitation, and her envelopes were too small. Worse, the postage was nearly double. After a stressful reprint and some last-minute resizing, everything worked out, but it was an expensive lesson.
Your wedding invitations set the tone for your big day, but choosing the wrong size can lead to unnecessary stress. To make sure your invitations are both beautiful and practical, here’s everything you need to know about wedding invitation sizes, RSVP cards, detail cards, envelopes, and even passport invitations for destination weddings.
Let’s make sure your invitations fit perfectly in both style and postage.
Tip 1: Stick with the Standard 5” x 7” Wedding Invitation
When in doubt, go with the classic 5” x 7” (A7 size). It’s timeless, elegant, and fits standard envelopes without needing extra postage.
In our shop, all wedding invitation templates are designed in this 5” x 7” size, ensuring they print beautifully and fit standard envelopes perfectly.
Why 5” x 7” Works Best
- Looks polished and professional without feeling oversized
- Fits A7 envelopes (5.25” x 7.25”) perfectly
- Avoids unexpected postage fees as long as it stays under one ounce
- Pairs beautifully with inserts like RSVP and detail cards
If you want a wedding invitation that feels both classic and practical, 5” x 7” is the best choice.
Tip 2: RSVP Cards – The Perfect Compact Size
Your RSVP cards might be small, but they play a big role in keeping your guest list organized. The standard size is 3.5” x 5” (A1 size).
Our RSVP card templates are all designed in 3.5” x 5” so they tuck perfectly into your wedding invitation envelope.
Why 3.5” x 5” is Ideal for RSVP Cards
- Slips neatly inside A7 wedding invitation envelopes without extra bulk
- Spacious enough for guest responses, but compact enough to keep postage affordable
- Works well with pre-addressed return envelopes for easy mailing
For a modern alternative, consider using a digital RSVP. We offer templates that include a QR code, so guests can respond online in seconds.
Tip 3: Save-the-Date Cards: Keep It 5” x 7”
Your save-the-date cards are the first preview of your wedding, setting the stage for what’s to come. To keep everything cohesive, 5” x 7” is the best choice—matching your wedding invitations for a polished look.
In our shop, all save-the-date templates are available in 5” x 7”, ensuring a seamless fit with your invitations.
Why 5” x 7” is the Best Save-the-Date Size
- Matches your wedding invitations for a cohesive design
- Large enough to be eye-catching, but still easy to mail
- Provides plenty of space for your date, location, and a favorite engagement photo
For a cost-effective option, consider printing your save-the-dates as postcards to save on envelopes and postage.
Tip 4: Picking the Right Envelope Size for Wedding Invitations
Even the most stunning invitation won’t arrive perfectly if it doesn’t fit its envelope. Choosing the correct envelope size ensures your invitations look polished and arrive undamaged.
Here’s a handy reference table with wedding invitation sizes and their corresponding envelopes in both U.S. and international formats:
Wedding Invitation & Envelope Size Guide
| Invitation Size | Dimensions (inches) | Dimensions (cm) | Corresponding Envelope | Envelope Size (inches) | Envelope Size (cm) |
|---|---|---|---|---|---|
| Standard (U.S.) | 5 x 7 | 12.7 x 17.78 | A7 Envelope | 5.25 x 7.25 | 13.34 x 18.42 |
| Square | 5.5 x 5.5 | 13.97 x 13.97 | Square Envelope | 5.75 x 5.75 | 14.61 x 14.61 |
| Large Rectangle | 6 x 9 | 15.24 x 22.86 | A9 Envelope | 6.25 x 9.25 | 15.88 x 23.5 |
| Slim | 4 x 9.25 | 10.16 x 23.5 | #10 Envelope | 4.125 x 9.5 | 10.48 x 24.13 |
| A5 (International) | 5.8 x 8.3 | 14.8 x 21 | C5 Envelope | 6.4 x 9 | 16.2 x 22.9 |
| A6 | 4.1 x 5.8 | 10.5 x 14.8 | C6 Envelope | 4.5 x 6.4 | 11.4 x 16.2 |
| Boarding Pass | 3.5 x 8.5 | 8.89 x 21.59 | #10 Envelope | 4.125 x 9.5 | 10.48 x 24.13 |
| Passport Invitation | 3.5 x 5 | 8.89 x 12.7 | A1 Envelope | 3.625 x 5.125 | 9.21 x 13.02 |
Our wedding invitation templates are designed to fit these standard envelope sizes, ensuring a hassle-free printing and mailing process!
Tip 5: Wedding Detail Cards – Keep Them Simple and Functional
Detail cards help your guests stay informed, whether it’s about accommodations, directions, or reception details. The standard size is 4” x 6”, which is large enough to include essential information without taking up too much space in your invitation suite.
All our wedding detail card templates are available in 4” x 6”, ensuring they pair perfectly with our invitations.
Tip 6: Destination Wedding Invitations – Passport & Boarding Pass Styles
For destination weddings, couples love themed invitations that mimic travel documents, making the event feel even more special! Two of the most popular choices are:
-
Passport Invitations (3.5” x 5”) – A mini-passport-style design for a travel-themed look.
Matching Envelope: A1 Envelope (3.625” x 5.125”) -
Boarding Pass Invitations (3.5” x 8.5”) – Designed to resemble an airline ticket, perfect for setting the tone for your adventure-filled wedding.
Matching Envelope: #10 Envelope (4.125” x 9.5”)
In our shop, we offer both passport and boarding pass invitation templates in these standard sizes!
Pro Tip: Consider adding a QR code to your boarding pass invitation, directing guests to your wedding website for RSVP details!
Tip 7: Need a Custom Invitation Size? We’ve Got You Covered
While standard sizes are the most cost-effective and easiest to mail, sometimes a unique size is exactly what you need. Whether you’re looking for a square invitation, a foldable design, or something oversized, we can customize our templates to match your vision.
If you love one of our designs but need a different size, just let us know—we’ll tailor it to fit your needs.
Download Our Printable Wedding Invitation & Envelope Size Guide
Make sure your invitations and envelopes fit perfectly with our free, printable Wedding Invitation & Envelope Size Guide.
This easy-to-use reference sheet includes:
- All standard invitation sizes (U.S. & international formats)
- Matching envelope sizes for each invitation
- Boarding pass & passport invitation sizes for destination weddings
- Quick-glance dimensions in inches and centimeters
Whether you're printing at home or using a professional print shop, this guide ensures you choose the right size for a seamless, stress-free wedding stationery suite.
Click to download the printable table now and simplify your invitation planning!
Final Thoughts: Find Your Perfect Wedding Invitation Size
Standard sizes (5” x 7” invitations, 3.5” x 5” RSVPs, and 4” x 6” detail cards) are the easiest and most cost-effective options.
Browse our collection of wedding invitation templates—designed to be stylish, practical, and customizable.
Which wedding invitation size do you love most? Let us know in the comments.
