Free AES Text Encryption Online
Encrypt and decrypt text using AES-GCM with password-based keys
AES-256-GCM
Military-grade authenticated encryption — the same standard used in TLS 1.3 and Signal.
PBKDF2 Key Derivation
Your password is stretched with 100,000 iterations and a random salt before being used as a key.
Zero Network Requests
All cryptographic operations run locally in your browser. No data is sent to any server.
How to Use
- 1
Choose mode
Select "Encrypt" to protect text, or "Decrypt" to recover original text from ciphertext.
- 2
Enter your text
In Encrypt mode, enter the plaintext you want to protect. In Decrypt mode, paste the Base64 ciphertext.
- 3
Enter a password
Choose a strong password. In Decrypt mode, use the same password that was used to encrypt.
- 4
Click Encrypt or Decrypt
The operation runs using the Web Crypto API in your browser. No data leaves your device.
- 5
Copy the result
Copy the encrypted ciphertext or the decrypted plaintext.