Standard Greeting Card Sizes – What You Need to Know

The most common greeting card sizes are 5×7 inches (12.7×17.8 cm) and 4.25×5.5 inches (A2). These sizes are perfect for mailing, printing, and general use.

Greeting cards come in a variety of dimensions, and choosing the right one depends on your purpose—whether you're sending a thank-you note, designing custom greeting cards, or launching a stationery brand. Understanding standard sizes helps avoid mailing issues and ensures a polished, professional result.

What Are the Most Common Greeting Card Sizes?

The most popular greeting card sizes are 5×7 inches and A2 (4.25×5.5 inches), as they fit standard envelopes and are accepted by most printers and postal services.

These sizes are not only widely available but also optimized for printing and mailing. If you’re designing custom greeting cards for personal or commercial use, starting with a standard size like 5×7" ensures compatibility with envelope types and postal regulations¹.

Comparison Table of Common Card Sizes

Type	Inches	Centimeters	Caso práctico
Most Common	5×7"	12.7×17.8 cm	Birthday, holiday, general
A2 Envelope Fit	4.25×5.5"	10.8×14 cm	Thank you, invites
Square Card	5×5"	12.7×12.7 cm	Modern designs
European Standard	A6 (4.1×5.8")	10.5×14.8 cm	Common in stationery stores
Oversized	8.5×11"	21.6×28 cm	Photo cards, group signing

How to Choose the Right Card Size for Your Purpose?

Choose 5×7" or A6 when buying cards; use 10×7" paper folded for DIY 5×7" cards. Consider mailing weight and envelope availability when choosing sizes.

Choosing the correct size is essential when making or buying custom greeting cards. Consider the occasion, whether you’ll include photos or handwritten notes, and the cost of mailing. A2 and 5×7" cards offer flexibility² across both casual and formal events.

Buying Greeting Cards

• Best for all occasions: 5×7" (standard)
• Cost-effective mailing: A2 (4.25×5.5")
• Photo-perfect fit: 6×8" to pair with 4×6" photos

DIY Card Making Tips

• Cut 10×7" paper for a folded 5×7"
• Add 0.125" bleed margins to avoid design cropping

What Are the Best Printing Practices for Greeting Cards?

5×7" and A6 cards offer the best balance of print cost, compatibility, and visual appeal. Use 100–120lb cover stock for optimal results.

If you're printing custom greeting cards, keep in mind both technical constraints and creative goals. Printers are calibrated for standard dimensions, so sticking to these ensures clean, edge-to-edge printing with minimal waste.

Printing Tips Breakdown

• Most efficient sizes: 5×7" and A6
• Custom shapes: Require die-cutting (adds cost)
• Paper weight: 100–120lb cover stock (ideal for thickness and durability)
• Finish options: Matte for writing, gloss for visuals

How to Match Cards with the Right Envelope?

Match card sizes with envelopes by adding 0.25" to each dimension. For example, a 5×7" card fits in an A7 envelope (5.25×7.25").

Whether you're mailing standard or custom greeting cards, the envelope needs to match in both fit and tone. A poorly matched envelope can increase postage costs or even delay delivery. Always confirm the outer dimensions to ensure a snug but not tight fit.

Envelope Matching Chart

Card Size	Envelope Size
5×7"	A7 (5.25×7.25")
4.25×5.5"	A2 (4.375×5.75")
Custom	Card size + 0.25" on all sides

Are There Any Tools to Help Visualize or Print Greeting Cards?

Use downloadable PDF templates, size comparison guides, and print cost estimators to streamline DIY or professional printing processes.

Whether you're creating a personal message or launching a line of custom greeting cards, having the right tools ³makes your workflow faster and more consistent. Templates ensure precision, while design platforms help you visualize the final product before printing.

Handy Resources

• ✅ Downloadable PDF templates (5×7", A6, A2)
• 📏 Visual size comparisons: credit card, iPhone
• 💸 Example costs: 100 cards = $50 (5×7"), $45 (A6)
• 🖨️ Software suggestions: Canva, Adobe Express

FAQs – Still Unsure About Greeting Card Sizes?

A2 cards measure 4.25×5.5", fitting A2 envelopes. Standard birthday cards are 5×7", or A6 in Europe.

Whether you're printing at home or ordering custom greeting cards online, knowing these dimensions helps avoid resizing errors, misprints, and envelope mismatches.

Common Questions

• What is A2 greeting card size?
  → 4.25×5.5" (10.8×14 cm), fits A2 envelope

• What envelope fits 5×7"?
  → A7 envelope (5.25×7.25")

• Standard birthday card size?
  → 5×7" in US, A6 in EU

• Standard size in cm?
  → 12.7×17.8 cm

Conclusion – Save, Print, or Customize

Bookmark this guide for reference, use the templates for DIY, or customize with an online tool.

Now that you understand the most common and practical dimensions, you're ready to create, choose, or print tarjetas de felicitación personalizadas with clarity and confidence.