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ROT13 Cipher
The classic ROT13 substitution cipher. Apply it twice to decrypt.
🔤 ROT13 Cipher
Apply the classic ROT13 letter substitution cipher to any text. Free, private, runs 100% in your browser.
How to use this tool
Simply paste or enter your input above, configure any options, and get instant results — all processed locally in your browser. Your data never leaves your device.