Choose Your Envelope Size First
Where invitation cards can be cut to any size, envelopes are made only in standard industry sizes. Before purchasing or designing your invitations, be sure a properly sized envelope will be available. Custom sized envelopes are very difficult to come by and are generally made to order in quantities of several thousand or more.
Whether your invitation cards come from us or elsewhere, below you can learn how to find just the right envelope size for a professional invitation ensemble.
Golden Rule: Choose an Envelope 1/8 to 1/4 Inch Larger than Your Invitation Card
The guideline to the perfect fit is an envelope that is 1/8 to 1/4 inch larger than your largest card. This will allow plenty of room for your card(s) without excessive wiggle room that may make your presentation look sloppy.
Standard A-Size envelopes Make it Easy (No Measuring Required)
Standard “A” Sizes (A1, A2, A6, A7, etc.) are designated with an A followed by a number. A sizes correspond to specific card and envelope sizes, and for simplicity, a card and envelope with the same A size are designed to be paired together.
For example, A7 size cards and A7 size envelopes are the perfect fit:
- A7 card size: (5 1/8 x 7)
- A7 envelope size: (5 1/4 x 7 1/4)
You will find standard A cards and envelope sizes throughout our website, and most professional stationers are familiar with A sizes as well.
Questions or Hesitations? Call Us!
If you still aren’t sure what size envelope to choose for your invitations, give us a call or email. We want to be sure your envelopes are just right and are happy to help.
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22 Comments
Do you have a Baronial cream or off white smooth envelope to fit an A-10 size invitation? Would you have an unlinned inner and outer envelope this size, I need 500 of them. If not, what size is the largest that would fit this request? Thank you for your prompt reply.
Dina Goldstein
Hi Dina,
Unfortunately, there is no true double envelope set for an A10 size invitation. We carry an Ecru Cream A10 – 6 x 9 1/2 Envelope but it has a straight flap, not a pointed flap.
my card is 5 3/8 x 7 1/4. do you have a nice ivory envelope. Need 50.
Hi Geraldine,
Thank you for your interest in our envelopes. As the video shows, an envelope to accommodate your card should be 1/8 to 1/4 of an inch larger. The perfect envelope size for your card would be about 5 1/2 x 7 1/2, but we are unaware of an envelope in this size. The closest size that we offer is our A8 – 5 ยฝ x 8 โ Envelope Ecru. This envelope is a bit wider than ideal so if you’re interested in trying it, we encourage you to first order a sample. It is an Ecru Cream color, perhaps a bit more creamy and less yellow than ivory.
Hello, I am looking for a 5 1/2 x 8 1/2 ivory envelope with a pointed flap. It is for my wedding invitations that came with a flat flap and will not look as nice with my wax stamp as a pointed one would. Thank you
Hi DJ. Thank you for checking with us for wedding quality envelopes. Unfortunately, we do not carry any 5 1/2 x 8 1/2 envelopes. But a very popular envelope size is 5 3/4 x 8 3/4. We offer a wide range of 5 3/4 x 8 3/4 (A9) size envelopes.
Can a A7 – 5 1/4 x 7 1/4 Envelope Ecru fit inside a A9 – 5 3/4 x 8 3/4 Envelope Carnival Black
Hi TaNeshia,
Yes, an A7 envelope will fit inside an A9 envelope. But keep in mind this is not a true inner/outer wedding envelope set. Feel free to get in touch if you have any specific questions about this. We’ll be happy to help.
If I am ordering the 5 1/8 x 7 landscape pocket fold, Ebenum, will it fit in the 5 1/4 x 7 1/4 envelopes or should I go one size bigger, 5 7/16 x 7 7/8, to accomodate the thickness of all of the inserts (RSVP, hotel information, map/directions)?
Hi Sheila,
Yes, a 5 1/4 x 7 1/4 (A7) Mailing Envelope is the correct size to accommodate our A7 Landscape Pocket Folds – 5 1/8 x 7. You should not need to go with a larger size. Please see our Pocket Fold sizing chart for the complete picture.
For peace of mind, you may want to order an A7 Pocket Fold, A7 Mailing Envelope, and possibly cards. Load the Pocket Fold as you envision and place it into the envelope. You can bring the finished invitation ensemble into your local Post Office to have it weighed to determine the postage.
My daughter’s wedding invitation is 5.5 x 7.75. She would like to put a backing sheet on it to make it a little heavier. What would you suggest the size of the cardstock be so we can buy an envelope to fit?
Hi Judy,
The answer to your question is dependent on the envelope you are using; but assuming you have not already purchased your envelopes, please take the following suggestions into consideration.
The next pre-cut card size up that we offer is an A9, which measures 5 1/2 x 8 1/2. If you used a 5 1/2 x 8 1/2 (A9) card as a backing card beneath your 5 1/2 x 7 3/4 top layer, you would have just a slight border at the top and bottom of the invitation card but no border on the sides, which would be an interesting look. Keep in mind that one advantage to using this size is that we offer lots of 5 3/4 x 8 3/4 (A9) envelopes to accommodate it.
If you would prefer a border all around your top layer, you might consider using a custom cut card that measures 5 7/8 x 8 1/8. This would give you a small, but uniform border all around, and would allow you to fit the card into a 6 x 8 1/4 inch baronial envelope. We offer these envelopes in white and ecru. If you are interested in custom cutting, please give us a call for additional information.
Please let us know if you have any additional questions for us.
Hello, the reply card for me wedding invitation is 3.5 x 5. Which would be the right size envelope to purchase?
Hi Angela,
You would need an A1 size envelope for your cards, which measures 3 5/8 x 5 1/8.
I have a 5×7 invitation that I would like to layer on top of an A9 card stock. After layering, adding a response card, response envelope, and information card will it all still fit in an A9 envelope? Any suggestions to share? Thanks!
Hi Jill,
The more you put in an envelope, the more the sides bow out, making it less accommodating. However, you should have no problem placing the items you mentioned inside of your envelope. Just be sure it’s sealed well before mailing.
I was wondering if you had a recommendation for an outer envelope for our wedding invitations. The size we are using for the inner envelope and cardstock is the A9.
Hi Jennifer,
We have a double envelope set for A9 (5 3/4 x 8 3/4) envelopes.
Just note that there is a bit of extra space between A9s and A10s, as they are not traditionally designed to be paired as a double envelope set. There is a 1/4 inch difference in height between the two envelopes, and 3/4 inch difference in the width.
Hello, I am using a seal and send invitation but I wanted to used a envelope because I didnt want the invite to get dirty or torn in the mailing process. This invite is measured at 5 5/8 and 4 1/8…what size do you suggest I purchase?
Hi Christian,
Since seal and sends are not designed to go in envelopes, we do not have one that is a great fit unfortunately. However, they do fit inside of an A6 Envelope – just keep in mind there will be a bit more slack between the envelope and the invitation than average.
Hi, I have an invite that measures 5×7 and I want to attach a colored backer card to this to show a slight border around all edges. What size backer do you recommend so that I can still fit into a A9 envelope? Also, what weight do you recommend for the top invite and what weight do you recommend for the backer card to keep postage costs as low as possible? Thank you ๐
Hi Juvina,
Your backer card can be up to 5 1/2 x 8 1/2 inches. We have this size pre-cut:
Of course, this will leave you with a very large border. You might consider trimming your 5 x 7 card a bit and laying it on top of an 5 x 7 card and using an 5 1/4 x 7 1/4 Envelope.
As far as weight goes, this is really a matter of preference. Some people prefer very thick invitations, some prefer thinner. If you have a very thick 5 x 7 card, you can probably go just slightly heavier on the backer, but if you 5 x 7 card is not very thick, you can go heavier on the backer.