Text Encryption
Encrypt and decrypt text with various ciphers
Calculator
ROT13 Formula
E(x) = (x + 13) mod 26
Sample Texts
About ROT13
Rotates letters by 13 positions. Same operation for encrypt and decrypt.
- * These are classical ciphers for educational purposes
- * They are NOT secure for sensitive data
- * Only letters (A-Z, a-z) are transformed; numbers and symbols remain unchanged
How to Use
Encrypt and decrypt text messages
Enter your text
Type or paste the message you want to encrypt or decrypt
Choose method
Select encryption method (AES recommended for security)
Enter password/key
Provide a strong password or encryption key
Encrypt or decrypt
Click encrypt to scramble or decrypt to reveal the message
Frequently Asked Questions
Common methods include AES (Advanced Encryption Standard) for secure encryption, Base64 for encoding (not true encryption), ROT13 for simple letter rotation, Caesar cipher for educational purposes, and XOR for basic obfuscation. AES is recommended for actual security needs.
Browser-based encryption can be secure if: 1) encryption happens client-side (in your browser), 2) your password/key never leaves your device, 3) the site uses HTTPS. However, for highly sensitive data, use dedicated encryption software like GPG or VeraCrypt.
Encryption scrambles data using a secret key - only someone with the key can decrypt it. Encoding (like Base64) transforms data into a different format but provides no security - anyone can decode it. Use encryption for security, encoding for data transport.
Encrypt your message, share the encrypted text through one channel (email, message), and share the password through a different channel (phone call, in person). Never send encrypted text and password together. Consider using end-to-end encrypted messaging apps instead.
Text Tools
Text converters, formatters, and manipulation utilities