AES Encryption Tool

AES Encrypt / Decrypt

Free online AES encryption and decryption tool supporting CBC, ECB, CTR, CFB, OFB, and GCM modes. Customize key length (128/192/256-bit), IV, padding, and output format. All operations run locally in the browser — no data is sent to any server.

Mode
Key Length
128-bit: 16 chars (UTF-8) or 32 hex chars
CBC/CFB/OFB/CTR: 16 chars (UTF-8) or 32 hex chars
Padding
Output Format

Encrypt

Plaintext → Ciphertext

Decrypt

Ciphertext → Plaintext

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