Card Security Code (AMEX)
Generate
Validate
CSC version:
CSC Key:
[0]PAN:[0]
Exp. date:[0]
Service Code:[0]
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📖 How to Use AMEX CSC Calculator
• Select CSC version: Version 1 (4-digit magnetic stripe) or Version 2 (enhanced with CSC-5, CSC-4, CSC-3).
• Enter CSC Key (32 or 48 hex characters) - the issuer's card security key.
• Enter AMEX PAN (15 digits), expiry date (YYMM), and service code (3 digits).
• Click Generate to create the CSC values, or enter a CSC and click Validate to verify.
• Version 2 generates multiple codes: CSC-5 (5 digits), CSC-4 (4 digits), CSC-3 (3 digits).