Standard Greeting Card Size & Dimensions: A2 vs. A7 & Paper Yield Guide

Stationery business owners are creative people with hands-on experience designing crafts at home.

One of their favorite projects is making custom envelopes in the form of greeting cards.

But confusion over the standard greeting card size halts those creative projects.

This guide is presented by the subject matter experts at The Premier Packaging for DIY enthusiasts based in the U.S. In this article, we talked about:

• International ISO vs standard retail card size
• US envelope sizes
• And conflicting measurements.

Here is the simple breakdown for a standard greeting card size:

• Retail Store Standard (A7): 5 × 7 inches — Built for display racks, photo cards, and commercial impact.
• Handmade / DIY Standard (A2): 4.25 × 5.5 inches — Built for home crafters. Yields two cards per 8.5 × 11-inch sheet with zero paper waste.

If you’re printing and cutting at home, start with A2. If you’re designing for commercial retail, start with A7.

Let’s lock in to explore the topic. Shall we?

What Is the Standard Greeting Card Size?

A retail greeting card measures 5 × 7 inches when folded. While a standard handmade card measures 4.25 × 5.5 inches when folded.

The standard size changes depending on whether you are buying commercially printed cards or cutting paper at home. This table will further answer your queries.

The important word here is folded.

When someone says a greeting card is 5 × 7 inches or 4.25 × 5.5 inches, they are generally talking about the finished card sitting on the table in front of you—not the full sheet of paper before it was folded.

That small distinction saves a surprising amount of confusion.

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Paper Yield: How Cards Are Cut from 8.5 × 11 Cardstock

For anyone printing or crafting cards at home, paper yield is the most important factor when choosing a size.

Because standard North American cardstock comes in Letter size (8.5 × 11 inches), different card formats produce different amounts of waste:

Why Do Greeting Card Size Guides Give Different Answers?

If you’ve ever compared several size charts and wondered which one was actually telling the truth, hear us out.

The problem isn’t with the measurements. It’s the word standard.

A size can be:

• commonly used
• popular with consumers
• efficient to cut from standard paper
• offered by printers
• associated with a particular envelope
• common for a particular type of card

Those descriptions can overlap without meaning exactly the same thing.

For example, a 4.25 × 5.5-inch card can be a perfectly normal greeting-card format even though 5 × 7 inches is a more familiar general-purpose retail size.

So the better question isn’t: “Which is the right standard for greeting card dimensions?”

It is: “Which size is most appropriate for the card being made?”

Common Greeting Card Sizes

Here are the card sizes you’ll find in craft stores, print shops, and stationery supplier catalogs:

What Does A7 Mean on a Greeting Card?

This is another place where creative people can get tripped up.

In U.S. greeting-card and envelope terminology, A7 commonly refers to the 5 × 7-inch format. An A7 envelope is slightly larger so a 5 × 7-inch folded card can fit inside it. Desktop Supplies lists A7 envelopes at 5.25 × 7.25 inches.

There is one important catch.

Greeting-card “A” terminology is an envelope Sizing system (Announcement envelopes), not the ISO 216 international paper standard. For reference follow this table:

So if you are ordering cards, envelopes, or packaging internationally, it is safer to confirm the actual dimensions in inches or millimeters rather than relying on the letter-number label alone.

Is a 5 × 7 Greeting Card Measured Folded or Flat?

For a folded greeting card, the stated size normally refers to the finished folded dimensions.

So a 5 × 7-inch card looks like this:

• Folded: 5 × 7 inches
• Flat before folding: 10 × 7 inches

An A2 card looks like this:

• Folded: 4.25 × 5.5 inches
• Flat before folding: 8.5 × 5.5 inches (Side-Fold) OR 4.25 × 11 inches (Top-Fold)

Understanding top-fold versus side-fold is essential when setting up your artwork:

This distinction matters when you are creating artwork for printing.

If you are designing a 5 × 7 folded card, setting up a document at only 5 × 7 inches could leave you with half the artwork area you actually need.

What Envelope Fits Your Greeting Card?

A card should never go into an envelope of the exact same size. Envelopes need roughly 0.125 to 0.25 inches of clearance so the card slides in easily without bending.

The following table is the mailing and envelope breakdown for standard cards:

Which Greeting Card Size Should You Choose?

If you’re still deciding what greeting card size to use, you don’t necessarily need to overthink it.

Choose A2 for handmade cards & efficient paper use

If you are cutting paper at home or making handmade cards, A2 (4.25 × 5.5 in) is the most practical choice. You get two full cards per sheet of 8.5 × 11 cardstock with zero paper wasted.

Choose 5 × 7 inches for photo cards & retail sales

This is probably the easiest choice if you want a familiar retail greeting-card format or are printing full-bleed photo family cards.

Choose Slimline or Mini-Slimline for modern artistic layouts

Slimline cards (3.5 × 8.5 in) fit inside standard business envelopes (#10) and give you a tall, narrow canvas. They are ideal for tall die-cut scenes, stamped landscapes, and modern lettering.

Choose a square card for visual balance

A 5 × 5 or 6 × 6-inch card can look very different from a traditional rectangular card. Just remember to budget for extra postage due to the USPS square envelope surcharge.

Packaging Your Cards for Sale

If you’re putting greeting cards into clear sleeves, stationery boxes, or display bags, the card size is only the starting point.

The finished package might contain:

• the folded card
• an envelope
• protective backing board
• several cards (for boxed sets)

Always size your packaging to fit the envelope, not just the card.

• For a single A2 card + envelope: Use a 4.5 × 5.875-inch clear resealable sleeve.
• For a single A7 card + envelope: Use a 5.4375 × 7.375-inch clear resealable sleeve.
• For boxed sets: Measure the combined thickness of 6 to 12 card/envelope pairs before ordering stationery boxes.

Planning for Commercial Print vs. Home Cutting

If you are trimming cards at home, you simply score and cut along your measured lines. However, if you send your artwork to a commercial print shop, you must account for printer margins:

• Finished folded size: The final trimmed size of the card sitting on a desk.
• Flat size: The full un-folded dimension before going through the folding machine.
• Bleed area: An extra 0.125 inches of artwork extended beyond the cut line so no white edges appear if the paper shifts during trimming.
• Safe area: Keep text and critical logos at least 0.125 to 0.25 inches inside the trim line so they aren’t accidentally cut off.

Working from the printer’s template prevents the classic printing surprise: “Why did my design get cut off?” 

Important Postal Rules for Cardmakers:

• Square Cards: The United States Postal Service (USPS) charges an extra fee (Non-Machinable Surcharge) on square envelopes because automated sorting machinery requires rectangular ratios.
• Thick Embellishments: If you use foam tape, wax seals, ribbons, or heavy 3D embellishments that make your envelope thicker than 0.25 inches, it will require additional postage or must be shipped as a package.

Key Takeaway

If someone asks you for the standard greeting card size, the simplest answer depends on how the card is made.

• For retail store cards: 5 × 7 inches (A7) is the practical answer.
• For handmade and DIY cards: 4.25 × 5.5 inches (A2) is the cost-effective answer.

So if you’re making a general-purpose greeting card at home, A2 gives you two cards per sheet of paper. If you want a traditional store-bought look or are printing photo cards, 5 × 7 inches is your best bet.