Encrypt and Decrypt Text with AES Online

The AES Encryption tool allows you to protect your sensitive messages using the Advanced Encryption Standard — the same algorithm used by governments and banks to secure data — ensuring your privacy in transit. It supports custom keys for maximum control. This tool is free, private, and processes all logic locally.

1. 1

   Enter your plaintext message and a secure passphrase.

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   Click Encrypt — the encrypted ciphertext appears in the output.

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   To decrypt: paste the ciphertext

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   enter the same passphrase

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   and click Decrypt.

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   Enter the plain text you want to encrypt or the ciphertext to decrypt.

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   Provide your secret encryption key (passphrase).

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   Click the action button and copy your secure result instantly.

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   What is AES encryption?

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    AES is a symmetric-key algorithm, meaning the same key is used for both encryption and decryption of your data.