Text to ROT13 Converter
Encode readable text with the simple ROT13 letter substitution.
Last updated: May 29, 2026
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Buy me a coffeeWhat is Text to ROT13 Converter?
Text to ROT13 Converter shifts each A-Z letter by 13 places. ROT13 is symmetrical, so applying the same transform again decodes the output.
How to Use Text to ROT13 Converter
Paste plain text.
Review the ROT13 output.
Copy the encoded text or use it as input to decode.
Common Use Cases
- Encoding forum spoilers.
- Teaching substitution ciphers.
- Testing simple text transforms.
- Creating reversible ROT13 examples.
Example Input and Output
Hello WorldUryyb JbeyqFrequently Asked Questions
Is ROT13 secure?
No. ROT13 is a simple substitution and should not be used for security.
What characters change?
Only A-Z letters are shifted. Numbers, punctuation, and spaces stay the same.
Is text uploaded?
No. Conversion runs locally in your browser.
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