What size are standard cards? This is a question often asked when discussing playing cards, greeting cards, or even business cards. The world of cards is vast and diverse, but when it comes to standard sizes, there are a few key dimensions you should know.

Standard card sizes vary depending on the type of card and region. However, in many parts of the world, the most common sizes are the Poker Size and the Standard or "A6" size for greeting cards.

Poker Size Cards
The Poker Size, or Poker Card Size, is widely used in poker games and casinos around the globe. Its dimensions are designed to be easily held and played with during games.

The standard Poker Size card is 2.5 inches (6.35 cm) by 3.5 inches (8.89 cm). This size allows for easy shuffling, dealing, and handling, making it a favorite among poker enthusiasts.
Poker Size Card Thickness

In addition to its length and width, the thickness of a Poker Size card is also crucial for gameplay. Standard Poker Size cards are around 0.015 inches (0.38 mm) thick. This thickness provides durability and allows for easy handling during games.
Thickness can vary slightly based on the quality of the cardstock, with high-quality cards often being slightly thicker for added longevity and durability.
Poker Size Card Stock

The material used to create Poker Size cards can also impact their feel and performance. Most Poker Size cards are made from smooth, durable cardstock to facilitate easy shuffling and handling.
Some Poker Size cards are printed on coated cardstock for an extra-smooth feel, while others are printed on uncoated cardstock for a more traditional, textured feel. In both cases, the cardstock is designed to withstand frequent use in card games.
Standard Greeting Card Size

Standard greeting cards, often referred to as "A6" size cards, are a staple in many parts of the world for their versatility and familiarity. This size is commonly used for birthday cards, holiday cards, and other special occasions.
The A6 size is defined by the ISO 216 standard, and its dimensions are 4.13 inches (105 mm) by 5.83 inches (148 mm). This size allows for a good balance between versatility and functionality, making it a popular choice for greeting cards.









A6 Card Folding
A6 cards are typically folded in half to create a greeting card with a 3.15-inch (80 mm) by 5.83-inch (148 mm) inside and a 4.13-inch (105 mm) by 5.83-inch (148 mm) outside.
This folding method allows for a convenient and familiar greeting card layout, with the inside often containing a handwritten message or a printed message and illustration.
A6 Card Stock
The cardstock used for A6 greeting cards can vary, with options ranging from lightweight to heavyweight. The most common A6 cardstock weights are 130 g/m² (100 lb) and 160 g/m² (120 lb), providing a sturdy yet manageable writing surface.
Some A6 greeting cards may also feature extra pochettes or envelopes that match the A6 size, providing a complete and cohesive greeting card package.
Understanding the sizes and specifications of standard cards can help you make informed decisions when purchasing cards for various occasions. Whether you're selecting poker cards for a game night or choosing greeting cards for a special event, being familiar with standard card sizes can streamline your shopping experience.