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ISO/IEC 7810 ID-1 Standard

Every credit card, debit card, ATM card, and government ID card in the world follows this standard. The exact dimensions are 85.60 mm wide × 53.98 mm tall × 0.76 mm thick (3.370\" × 2.125\" × 0.030\"). This is why your card works in any ATM anywhere on earth.

Credit Card Dimensions in Every Unit

Millimeters

Width85.60 mm
Height53.98 mm
Thickness0.76 mm

Centimeters

Width8.560 cm
Height5.398 cm
Thickness0.076 cm

Inches

Width3.370"
Height2.125"
Thickness0.030"

Cards That Are All the Same Size

💳Credit Cards (Visa, Mastercard, Amex)
💳Debit Cards
🏧ATM Cards
🪪National ID Cards
🚗Driver's Licences (most countries)
🗳️Voter ID Cards
🎓Student ID Cards
🏢Employee Access Cards
🏨Hotel Key Cards
🛒Supermarket Loyalty Cards
📚Library Cards
🎁Gift Cards

Why Credit Card Actual Size Matters

Knowing the exact physical size of a credit card has more uses than you might expect. Card holders, wallets, card sleeves, and RFID-blocking cases are all sized to the ID-1 standard — so checking if a case fits is as simple as knowing your card is 85.6mm wide.

Practical Uses

  • Designing card holders: All card slots follow 85.6 × 53.98 mm — use the tool to verify your design
  • Screen calibration: Use your card as the most accurate possible ruler calibration reference
  • Print verification: Confirm your printed business cards match standard card dimensions before a full print run
  • Wallet or purse sizing: Check if a wallet or bag has card slots by measuring 85.6mm or 53.98mm
  • Badge holder sizing: Most ID card holders and lanyards are built for ID-1 dimensions

The Credit Card as a Universal Measurement Reference

Because every credit card on Earth is exactly 85.6mm wide, it's the most reliable pocket-sized measuring tool you always have. You can use it to roughly estimate other measurements: two credit cards stacked side by side = ~107mm, 3 cards tall = ~162mm, etc.

Frequently Asked Questions

What is the exact size of a credit card?

85.60 mm wide × 53.98 mm tall × 0.76 mm thick. This is the same for all credit cards, debit cards, and most ID cards worldwide (ISO 7810 ID-1).

Are all credit cards the same size?

Yes — all standard payment cards (Visa, Mastercard, Amex, UnionPay, etc.) and most government ID cards follow ISO 7810 ID-1: 85.6 × 53.98 mm.

Is a business card the same size as a credit card?

No. Standard business cards (US) are 88.9 × 50.8 mm — slightly wider and shorter than a credit card. In Europe, 85 × 55 mm is common, which is very close to ID-1.

What are the credit card dimensions in inches?

3.370 inches wide × 2.125 inches tall × 0.030 inches thick.

Why is a credit card used to calibrate screen rulers?

Because every credit card is exactly the same size worldwide — 85.6mm wide. This makes it a perfect universal reference point for calculating your screen's pixel density (PPI).

Related Tools

Online Ruler (mm/cm/inches) →Screen Ruler MM →Unit Converter →All Tools →