Caesar Cipher / ROT13

Giới thiệu công cụ

Encode or decode text with the classic Caesar shift cipher. Adjust the shift from 0 to 25 with a slider, jump to ROT13, or brute-force all 26 shifts to reveal a hidden message.

Tổng quan công cụ

The Caesar cipher shifts each letter by a fixed number of positions in the alphabet. ROT13 is the special case where the shift is 13, which makes it self-inverse (encoding twice returns the original text). Digits, punctuation, and whitespace are left unchanged. This is a classical cipher intended for puzzles and learning — it provides no real cryptographic security.

Trường hợp sử dụng

• Use Caesar Cipher / ROT13 when you need fast encode and decode text with a classic caesar shift cipher. includes a slider, a rot13 preset, and a brute-force preview of all 26 shifts.
• Handle encoding workflows directly in the browser with no install required.
• Support SEO long-tail intent by covering quick checks, troubleshooting, and one-off conversions.

Ví dụ đầu vào/đầu ra

Attack at dawn!

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Khoor Zruog

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