small birthday card

The most common size is a compact 4 x 6 inches. Some specialty cards use slightly different dimensions—for example, 4.625 x 6.75 inches.

Cardstock is commonly 250 gsm for a sturdy feel, while matching envelopes are often made from about 120 gsm paper.

They’re suitable for many recipients and occasions: kids and students, teachers, family members and coworkers, church or group use, and general personal or professional greetings.

Many packs are blank inside for personalized notes, while some include printed inside messages. For example, certain themed designs (like gamer cards) include a multi-line printed message.

Some sets have a glossy exterior with a matte interior for easy writing, while many use 250 gsm cardstock with a smooth, sturdy writing surface.

The common 4 x 6 inch size is compact and ideal for slipping into gifts or mailing; it also leaves enough room for small enclosures like gift cards or photos.