Encrypt Text

Encrypt and Decrypt Text — AES, DES, Base64

The Encrypt and Decrypt Text tool is a free online utility that lets you protect sensitive text using popular encryption algorithms including AES-256, DES, Triple DES, and Base64 encoding. Enter your plaintext message, choose a password (for symmetric encryption) or select an encoding method, and the tool instantly produces encrypted ciphertext that can only be decrypted with the same password and algorithm. All operations run entirely in your browser — no data is sent to any server.The tool supports multiple encryption methods: AES-256-CBC (the gold standard for symmetric encryption, used by governments and financial institutions), Triple DES (legacy compatibility), and Base64 (encoding, not encryption — useful for obfuscation and data transport). For AES and DES operations, the password you provide is used to derive the encryption key through a key derivation function. The encrypted output is provided in Base64 format for easy copying and sharing.Developers use this tool to quickly encrypt configuration values, API secrets, and test data. Security professionals test encryption implementations and compare outputs. Privacy-conscious users encrypt personal notes, passwords, or messages before storing or sharing them. Students learning cryptography use it to understand how symmetric encryption transforms plaintext into ciphertext. The client-side processing ensures that your sensitive data never leaves your device.Encrypt and Decrypt Text is part of the facilita.tools security toolkit. Available in Portuguese, English, and Spanish, optimized for desktop and mobile browsers.