Security•Free tool
Caesar Cipher – Encrypt & Decrypt Text
Encrypt or decrypt text using the Caesar cipher shift. Pick a shift value from 1-25 and see all 25 possible decodings instantly.
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SEC
Tool
Enter your values and get results instantly.
HOW
How to Use
- 1Enter your text\n2. Choose encrypt or decrypt\n3. Set the shift value (1-25)\n4. See the result instantly\n5. Try all shifts with brute-force mode
WIN
Benefits
Encrypt and decrypt modes
All 25 shifts brute-force view
Preserves case and symbols
Copy with one click
Free and private
FAQ
Frequently Asked Questions
What is the Caesar cipher?
It is one of the oldest ciphers — each letter is shifted by a fixed number of positions in the alphabet. With shift 3, "HELLO" becomes "KHOOR".
How do I crack a Caesar cipher?
With only 25 possible shifts, try each one. The tool shows all 25 outputs so you can spot the readable message instantly.
Is it secure?
No — the Caesar cipher is trivially breakable and used only for learning and puzzles, never for real security.