Production-Ready Caesar Cipher Suite

ROT13 Encoder / Decoder

Obfuscate or reveal text using symmetric ROT13, ROT5, ROT18, ROT47, and custom Caesar substitution ciphers.

Input Content Workspace

Click any preset sample to populate input instantly:

ROT-13
Output Workspace
Input Size0 B
Output Size0 B
Active ShiftROT-13
Letter/Digit0 L / 0 D
Cipher VariantOutput PayloadAction
No cipher comparisons available.
Recent Cipher Operations:
Symmetric Involution

ROT13 is its own inverse; applying the cipher a second time instantly decrypts the text back to original plain message.

ROT5, ROT18 & ROT47

Full support for numeric digits rotation (ROT5), combined letter+digit ciphers (ROT18), and full ASCII printable character shifts (ROT47).

Spoiler & Puzzle Protection

Obfuscate online forum spoilers, puzzle solutions, geocaching hints, and sensitive text payloads from immediate visual scan.