ROT13 Cipher
Encode and decode text using ROT13 substitution
Encode and decode text using ROT13 substitution. Key features include Instant ROT13 conversion and Bidirectional (same operation). Use it for encoding, decoding, and format conversion. All processing runs locally in your browser. Your files and text are not sent to Tool-web's server.
Encrypted with HTTPSProcessed in your browser
All processing runs locally in your browser. Your files and text are not sent to Tool-web's server.
Actions:
How to Use
- Enter the text to encode or decode
- The ROT13 result appears instantly
- Apply again to decode
- Copy the result
Features
- Instant ROT13 conversion
- Bidirectional (same operation)
- Preserves non-alpha characters
- Supports Unicode
- One-click copy
Frequently Asked Questions
What is ROT13?
ROT13 is a Caesar cipher that shifts each letter by 13 positions in the alphabet. It is its own inverse.
Does it affect numbers and symbols?
No. Only letters (A-Z, a-z) are shifted. Numbers, spaces, and symbols remain unchanged.
Is ROT13 secure?
No. ROT13 provides zero security and is easily broken. It is used for hiding spoilers and simple obfuscation.
What encoding tools are available?
We offer Base64 encoder/decoder, URL encoder/decoder, hash generator (MD5, SHA), XOR encoder, ROT13, Caesar cipher, and more.
Are these encoding tools free?
Yes. Every encoding tool is free and requires no account, installation, or usage limits.
Is my data secure during encoding?
All encoding and decoding happens in your browser. No data is ever sent to external servers, making it safe for sensitive information.
Do the tools support Unicode?
Yes. All tools handle UTF-8 encoded text including non-ASCII characters, emoji, and international text correctly.
Privacy & Security
All processing happens entirely in your browser using client-side JavaScript. Your files and text are not uploaded to Tool-web's server.
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