Encrypt and decrypt text using Caesar cipher, ROT13, Atbash, and Vigenère cipher. Includes adjustable shift, custom keyword, and instant swap.
Yes, completely free. No sign-up, no credit card, no usage limits.
Never. Everything runs 100% in your browser. Nothing is uploaded to any server.
Yes. All tools are fully responsive and work on phones, tablets, and desktops.
Caesar Cipher
Shift each letter by N positions. Current shift: 13. Effective ROT-13.
⚠ These are classical ciphers for learning/fun — not secure for real-world data protection.