ROT13 / Caesar Cipher

Shift the letters in your text by a fixed amount (ROT13 by default), preserving case, numbers and punctuation. ROT13 is its own inverse. Runs entirely in your browser.

Shift (1–25)

Decrypt (reverse)

Input

Output

Only A–Z / a–z letters are shifted. ROT13 (shift 13) encodes and decodes with the same operation.