ROT13 Encoder / Decoder
Apply ROT13 to Latin letters and apply it again to recover the original text.
Free · No signup · No watermark · On-device processing
Use the tool
How to use ROT13 Encoder / Decoder
- Paste Latin-letter text, either plain or already ROT13 encoded.
- Run the same transformation in either direction.
- Copy the result; applying ROT13 again restores the letters.
How this tool handles your input
A–Z and a–z shift by 13 positions. Digits, punctuation, emoji and non-Latin letters are unchanged. The same action encodes and decodes.
ROT13 is reversible obfuscation, not encryption and not suitable for secrets.
Example: Hello → Uryyb → Hello
Privacy and browser support
Your input is handled in this browser tab. Selected files and entered text are not sent to Varento Tools by this tool. Some specialized libraries load only when needed. A browser with JavaScript and sufficient device memory is required. Read our local-processing explanation.
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Frequently asked questions
Is this tool free without daily usage limits?
Yes. Varento Tools has no signup, accounts, usage-count caps, paywalls or watermarks. Device memory, format support and browser restrictions can still limit technically demanding files.
What input and output rules apply?
A–Z and a–z shift by 13 positions. Digits, punctuation, emoji and non-Latin letters are unchanged. The same action encodes and decodes.
What are the limitations?
ROT13 is reversible obfuscation, not encryption and not suitable for secrets.
Is my input uploaded?
No. This tool processes your input in the current browser tab, without a processing API or account.