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参照物
2026-08-14
4 min read
Physical Dimensions Reference Table: Credit Cards, Coins & Badges
Physical reference table for credit cards, driver's licenses, and coins to calibrate digital measurement tools when a physical ruler is unavailable.
1. ISO/IEC 7810 Credit Card Standard Dimensions
Credit cards, debit cards, driver's licenses, and ID cards globally adhere strictly to the **ISO/IEC 7810 ID-1** specification.
- Width: 85.60 mm (8.56 cm / 3.370 in)
- Height: 53.98 mm (5.40 cm / 2.125 in)
- Corner Radius: 3.18 mm
2. Coin Physical Diameters Table
| Coin | Diameter (mm) | Diameter (cm) | Thickness (mm) |
|---|---|---|---|
| US Quarter (25¢) | 24.26 mm | 2.43 cm | 1.75 mm |
| Euro 2 (€2) | 25.75 mm | 2.58 cm | 2.20 mm |
| UK 1 Pound (£1) | 23.43 mm | 2.34 cm | 2.80 mm |
| KRW 500 Coin | 26.50 mm | 2.65 cm | 2.00 mm |
3. Precision Calibration Tip
Ensure your browser zoom level is set to 100% (Ctrl+0 / Cmd+0) prior to aligning reference objects against your screen.
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