What Size Should Your Wedding Invitation Be?

If you're planning your wedding and wondering whether the traditional 5×7 wedding invitation size is the right choice, you’re not alone. Couples search for this exact answer every single day — and the truth is beautifully simple: 5×7 (A7) is the industry standard because it’s elegant, practical, and perfectly suited for mailing and readability.

This size gives you enough room for names, dates, venue details, and reception information without ever feeling crowded. It also fits seamlessly into standard A7 envelopes, which means no special postage, no custom envelopes, and no unexpected mailing fees.

So if you’re debating whether 5×7 is big enough, the answer is yes — it’s the ideal size for most couples. Here’s why this classic format continues to be the most trusted choice for wedding invitations today.

Example of a Standard 5×7 Wedding Invitation Suite

Love in full bloom! A beautifully arranged wedding invitation suite featuring vibrant burgundy and blush florals, soft neutrals, and elegant gold accents — the perfect start to your big day.

Explore this wedding invitation here.

Why the Standard 5×7 (A7) Is the Best Choice

Couples often worry: Is 5×7 big enough for all our wedding details?
Absolutely. It’s the perfect blend of form and function—and here’s why:

1. It Fits Standard A7 Envelopes (No Custom Sizing Required)

A7 envelopes are widely available and designed specifically for 5×7 invitations, which means:

• No resizing
  

• No custom envelope sourcing
  

• No compatibility issues
  

Your invitation slips right in — done.

2. It Meets Standard USPS Letter Requirements

A 5×7 invitation qualifies as a standard letter, so you avoid:

• 🚫 Oversized mailing fees
  

• 🚫 Non-machinable surcharges
  

• 🚫 Special handling requirements
  

Just seal, stamp, and send.

3. It Looks Classic, Elegant, and “Wedding Worthy”

The size feels formal and intentional — not too large, not too small — and instantly reads as wedding stationery.

4. It Fits All Necessary Details Without Feeling Crowded

Names, date, venue, and reception details stay clean and legible:

✓ No tiny fonts
✓ No awkward spacing
✓ No cluttered layout

5. It Works Seamlessly With Coordinating Inserts

Detail cards, RSVP cards, and enclosure cards are traditionally designed to layer perfectly with a 5×7 format — making your invitation suite look cohesive and thoughtfully planned.

Are There Other Invitation Sizes? (A Quick Overview)

Yes — although 5×7 is the most popular, you may occasionally see:

These sizes are helpful to know, but for the main invitation, 5×7 remains the preferred choice — especially if you want mailing to be smooth and budget-friendly.

Why You Should Choose the Standard 5×7 Invitation

If you're on the fence, here are reasons couples consistently choose the classic size:

✔ Easy mailing: A7 envelopes are widely accepted by postal systems and don’t require special handling.
✔ Budget-friendly: No extra postage fees for odd sizes or square envelopes.
✔ Better readability: The layout offers plenty of room for names, venue details, and optional elements like dress code or reception info.
✔ Looks elevated: It has a traditional presence that feels special — more formal and substantial than smaller cards.
✔ No upgrades or custom sizing needed: Everything aligns with standard printing and mailing supplies.

If your goal is elegance and convenience, 5×7 is the safest, most reliable choice.

Should You Ever Choose a Different Size?

Probably not — unless you’re intentionally going oversized for statement or luxury aesthetics.

Non-standard sizes often require:

• Special envelopes
  

• Additional postage
  

• More printing coordination
  

• Higher overall cost
  

Most couples decide the upgrade isn’t worth it.

Most of our printed wedding invitations are designed at the classic 5×7 (A7) size with matching envelopes. Occasionally, when a design works best as a square layout, we create it in a 5×5 format and pair it with the appropriate square envelopes.

Browse the full collection: Printed Wedding Invitation Collection

Looking for More Wedding Invitation Tips?

Here are some helpful guides:

What Should I Include on a Wedding Invitation?

How to Address Wedding Invitation Envelopes (Correctly)

When Should Wedding Invitations Be Sent?

When to Send Save the Dates and How They Differ from Invitations