What is the size of a credit card?

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Credit cards are a ubiquitous financial tool used by millions of people around the world for various transactions. One common question that arises is, “What is the size of a credit card?” In this article, we will explore the standard dimensions of a credit card and delve into additional details related to its size.

Standard Dimensions

Length: The length of a standard credit card is 85.60 millimeters or 3.370 inches.

Width: The width of a standard credit card is 53.98 millimeters or 2.125 inches.

Thickness: The thickness of a standard credit card is typically 0.76 millimeters or 0.030 inches.

These dimensions are standardized to ensure compatibility with card readers, wallets, and other card-related accessories. The size of a credit card is designed to be convenient for carrying in wallets and purses while maintaining durability.

Materials Used

Credit cards are typically made from a combination of materials to achieve the desired characteristics of durability, flexibility, and security. The most common materials used in credit card production include:

PVC (Polyvinyl Chloride): PVC is a widely used plastic material known for its durability and flexibility. It is the primary material used for the body of credit cards.

Magnetic Strip: The magnetic strip on the back of a credit card is made of a thin layer of magnetic material, typically iron oxide particles mixed with plastic resin. This strip stores encoded information that can be read by card readers.

Embossed Numbers: The raised numbers on the front of a credit card are achieved through a process called embossing. This involves applying heat and pressure to the PVC material, creating a permanent impression.

Variations in Size

While the standard dimensions mentioned above are widely accepted, it is worth noting that there can be slight variations in the size of credit cards. These variations may occur due to manufacturing processes, regional preferences, or specific card issuer requirements. However, these differences are typically minimal and do not affect the card’s functionality or compatibility with card readers.

It is also important to mention that there are other types of cards, such as contactless cards or smart cards, which may have additional features and components that can slightly alter their size compared to traditional credit cards. These variations are usually within a few millimeters and are still designed to fit standard card slots and readers.


In conclusion, the standard size of a credit card is 85.60 millimeters (3.370 inches) in length, 53.98 millimeters (2.125 inches) in width, and 0.76 millimeters (0.030 inches) in thickness. These dimensions are carefully standardized to ensure compatibility with card readers and wallets. While there may be slight variations in size, they are generally minimal and do not impact the card’s functionality.


– www.creditcards.com
– www.bankrate.com
– www.cardrates.com