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AES-256 Key Expander

AES-256 key schedule expansion generator and step-by-step visualizer.

Cryptography

AES-256 Master Key

Provide a 64-character hex key (256-bit).

Schedule Statistics

Total expanded words: 60 (4-byte words)

Total rounds: 14

Expanded Round Keys (W0 - W59)

Click Expand Key to compute.