Buy the card that matches the relationship and the mailing method. For most birthday cards, a 5 by 7 inch card printed on 80 to 100 lb cover stock with a matching envelope is the safest pick. It feels substantial, fits standard first-class postage, and gives you room for a handwritten note. If you plan to mail it, skip oversized or lumpy designs that need extra postage and a trip to the counter.
What to Look For in a Birthday Card
Focus on five things: size, paper weight, finish, envelope, and message space.
- Size: A2 (4.25 by 5.5 inches) suits short notes and small gifts. A7 (5 by 7 inches) is the standard for birthday cards and fits most retail envelopes.
- Paper weight: 80 to 100 lb cover stock is the sweet spot. Thinner card stock (65 lb) feels flimsy and can show ink from the other side.
- Finish: Matte takes pen well. Glossy looks sharp but smears with some pens. Foil and glitter add shine, but glitter sheds.
- Envelope: Match the envelope to the card size. A7 cards need A7 envelopes, not A2.
- Message space: Blank inside gives you control. A printed verse works when you want a polished message and have little time.
Parameter Bands That Hold Up
Use these ranges as a buying checklist.
- Folded size: 4.25 by 5.5 inches (A2) for simple notes, 5 by 7 inches (A7) for standard birthday cards, 5.5 by 8.5 inches for group cards.
- Paper weight: 65 lb cover (light), 80 to 100 lb cover (standard), 110 to 120 lb cover (premium, hard to fold).
- Envelope: A2 envelope for A2 card, A7 envelope for A7 card. Square envelopes may cost more to mail.
- Pack size: Single cards for one person, 6 to 12 packs for families or offices, 24 or more for classrooms and teams.
- Postage: A 5 by 7 inch card with one stamp works for most US mailings. Check weight and thickness if you add inserts.
Pitfalls to Avoid
- Buying a dark card that needs a gel pen or white ink. Not everyone has one.
- Choosing a card with a pre-printed message that does not match the relationship. A romantic verse for a coworker is a miss.
- Ignoring envelope size. A card without the right envelope means a separate purchase.
- Assuming all bulk packs are mixed designs. Some packs repeat one design.
- Adding thick embellishments that break postal sorting machines.
FAQ
Should I buy blank birthday cards or cards with a printed message?
Blank cards suit personal notes and people you know well. Printed messages save time and work for acquaintances, clients, and bulk sending.
How many birthday cards should I keep on hand?
Most households use 10 to 20 cards a year. A pack of 12 covers the common cases. Offices and classrooms may need 24 or more.
Can I mail a 5 by 7 inch birthday card with one stamp?
In the US, a standard 5 by 7 inch card under one ounce falls within one first-class stamp in most cases. Square, rigid, or heavy cards may need extra postage.
What paper weight feels best for a birthday card?
80 to 100 lb cover stock. It holds a crease, stands upright, and does not show writing from the opposite side.