Text Encryption Tool
Encrypt and decrypt text using various ciphers. Caesar cipher, ROT13, Vigenere, and more. Free online text encryption tool.
Free text encryption tool. Encrypt/decrypt with Caesar, ROT13, Vigenere, Atbash ciphers. Swap input/output for quick reversal.
- ✓ Caesar cipher with adjustable shift
- ✓ ROT13, Vigenere, and Atbash ciphers
- ✓ Base64 encoding option
- ✓ Swap input/output for easy decryption
- ✓ 100% client-side - text never sent anywhere
How to Encrypt or Decrypt Text
- 1 Enter or paste your text in the input field
- 2 Select a cipher type (Caesar, ROT13, Vigenere, Atbash, etc.)
- 3 Enter a key or shift amount if required by the cipher
- 4 Click 'Encrypt' or 'Decrypt' to process the text
- 5 Copy the result or swap input/output to reverse the operation
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Last updated: January 15, 2026 · v2.1