The Size of an ATM Card Explained: How It Works and Key Features

What is an ATM card?

Key Details About ATM Card Size

ATM cards are tools issued by banks according to ISO 7810 standards with a standard rectangular design. The ATM card will display all information including: name and logo of the issuing bank, cardholder name, bank card number, affiliated issuing organization (Napas, Visa, Mastercard.), time issuance and expiration of cards, magnetic tape (magnetic card) or chip (chip card), paper tape of the cardholder's signature.

ATM cards are used to automate transactions at ATMs such as withdrawing money, transferring money, checking accounts, paying bills.

ATM cards are divided into many types depending on different criteria. If classified by card features, there are debit cards, credit cards, and prepaid cards. If classified according to technical properties, they include chip cards and magnetic cards.

What is the size of an ATM card?

Currently, ATM cards are designed in a rectangular shape according to ISO 7810 standards. The standard size of an ATM card is 85.60 mm (3.37 inches) in length and 53.98 mm (2.13 inches) in width. .

The corners of the ATM card are rounded with a radius of 2.88–3.48 mm. With a compact design, users can easily store their ATM cards in their wallets or bags.

Why are all ATM cards the same size?

Banks' ATM cards may have different designs and features, but the size is the same. The reason is because:

- Ensure compatibility with payment points (POS) around the world. The standard size of 85.60mm x 53.98mm allows ATM cards from banks globally to be compatible with all POS devices. Without this standard size, POS device manufacturers have to produce many different types of devices to read cards from different banks. This leads to incompatibility and difficulty in using ATM cards in different countries.

- Ensuring convenience: With standard sizes, users can easily carry ATM cards anywhere in the world without having to worry about the card not being compatible with ATMs in different places. globally.