ROT13Cipher
Encode and decode text using ROT13 cipher
About ROT13
ROT13 is a simple letter substitution cipher that replaces each letter with the letter 13 positions after it in the alphabet. It's symmetrical - encoding and decoding use the same operation. Used for obscuring spoilers, not for security.
🔤 ROT13 Reference Chart
D→Q, E→R, F→S, G→T
K→X, L→Y, M→Z
Q→D, R→E, S→F, T→G
X→K, Y→L, Z→M
📚 How ROT13 Works
- • Letter Rotation: Each letter is shifted 13 positions in the alphabet
- • Symmetrical: Applying ROT13 twice returns the original text (13 + 13 = 26)
- • Case Preserved: Uppercase stays uppercase, lowercase stays lowercase
- • Non-Letters Unchanged: Numbers, spaces, and symbols remain the same
- • Not Secure: ROT13 is for obfuscation, not encryption - easily reversed
How It Works
Step 1
Enter text
Step 2
Click encode/decode
Step 3
Copy result
Features
About This Tool
Encode and decode text using ROT13, a simple letter substitution cipher. Commonly used for hiding spoilers and puzzle solutions.
🎯Why Use This Tool?
- 100% Free: No hidden costs, premium tiers, or usage limits
- Privacy First: All processing happens in your browser - your files never leave your device
- No Signup Required: Start using immediately without registration
- Fast & Efficient: Client-side processing means instant results
- Professional Quality: Industry-standard algorithms for reliable outputs
💡Common Use Cases
✨Key Benefits
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