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Cipher Tools

Classic ciphers and codes — apply the ROT13 rotation cipher and translate text to and from Morse code.

5 tools · 100% client-side · nothing is uploaded

🔁ROT13

Apply the ROT13 letter-rotation cipher online. Symmetric — the same action encodes and decodes. Runs in your browser.

📡Morse

Translate text to Morse code or decode Morse back to text. Supports letters, digits and punctuation. Runs in your browser.

🏺Caesar Cipher

Encrypt or decrypt text with a Caesar shift cipher (any shift 0-25). Free online Caesar cipher tool.

🔃Atbash

Apply the Atbash cipher, mapping A to Z, B to Y and so on. Its own inverse. Free online Atbash tool.

🗝️Vigenère

Encrypt or decrypt text with the Vigenère keyword cipher. Free online Vigenère cipher tool.
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Privacy: every tool in this category runs entirely in your browser. Your input is never sent to, received by, or stored on any server — no uploads, no tracking.