ROT13 Encoder/Decoder
Encode or decode text using ROT13, ROT5, or ROT47. Applying the same cipher twice returns the original.
About ROT13 Encoder/Decoder
ROT13 Encoder/Decoder applies the ROT13 substitution cipher — rotating each letter 13 positions in the alphabet. Since the alphabet has 26 letters, applying ROT13 twice restores the original text. Also supports ROT5 (for digits) and ROT47 (for all printable ASCII characters).
ROT13 is commonly used to obscure spoilers in forum posts, hide joke punchlines, and obfuscate email addresses from simple scrapers. It's not encryption — it provides no security — but it's useful for trivial text concealment.
Real-time encoding means you see results as you type.
Features
- ✓ROT13, ROT5, and ROT47 cipher support
- ✓Real-time encoding/decoding
- ✓One-click swap (encode ↔ decode)
- ✓Works with any printable ASCII text
Common Use Cases
- →Obscuring spoilers in forum posts
- →Hiding joke punchlines before the reveal
- →Learning about classical substitution ciphers
- →Simple text obfuscation for non-sensitive content