← ← All Tools
中文

🔄 ROT47 Cipher

ROT47 cipher for ASCII printable characters with 0-93 shift, self-inverse detection, brute-force attack, and ASCII frequency analysis

ROT47 shifts ASCII printable characters (codes 33 to 126, 94 chars total). ROT47 (shift=47) is self-inverse: ROT47(ROT47(x)) = x. All processing runs locally in your browser.
Direction
▶ Brute Force (All 94 Shifts)
▶ ASCII Character Frequency Analysis
Enter text to see ASCII character frequency distribution (top 20).

More tools you might find useful.

🔐
Base64 Encode/Decode
Encode and decode text with standard and URL-safe Base64, including UTF-8 and Unicode support.
🔡
Base-N Encode / Decode
Convert UTF-8 text, hex, Base32, Base32hex, Base64, and Base64url locally in your browser with strict rules.
🔄
Binary Complement Calculator
Visualize sign-magnitude, ones' complement and two's complement for integers with 8/16/32/64-bit widths, dec/bin/hex I/O, step-by-step derivation, color-coded bit grid and boundary presets
🔐
Caesar / Vigenère Cipher
Caesar and Vigenère cipher encrypt/decrypt with brute-force, crib filtering, chi-squared ranking, frequency analysis, IC, Kasiski auto-crack, and Tabula Recta
🔢
CRC Calculator
CRC-8/16/32/64 Checksum Calculator with 24 algorithms, text/hex/file input

Free online ROT47 encrypt and decrypt tool for ASCII printable characters (! through ~, 94 chars total). Features 0-93 shift slider, ROT47 (shift=47, self-inverse) and ROT5 presets, brute-force attack with chi-squared intelligent ranking for all 94 shifts, and ASCII character frequency analysis. One-click input/output swap to verify reversibility. Real-time 200ms response. All processing runs locally in your browser — input data is not uploaded by the tool. Perfect for code obfuscation, CTF competitions, learning cryptography, and developers.