Caesar Cipher
Encode and decode text using Caesar cipher with any shift
Encode and decode text using Caesar cipher with any shift. Key features include Adjustable shift value (1-25) and Encode and decode modes. 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
- Choose the shift value (1-25)
- Select encode or decode mode
- Copy the result
Features
- Adjustable shift value (1-25)
- Encode and decode modes
- Preserves case and formatting
- Supports all alphabets
- Instant conversion
Frequently Asked Questions
How does the Caesar cipher work?
Each letter is shifted by a fixed number of positions in the alphabet. A shift of 3 makes A become D, B become E, etc.
Can I decode without knowing the shift?
You can try all 25 possible shifts (brute force) to find the correct one.
Is Caesar cipher secure?
No. Caesar cipher is trivially broken with brute force (only 25 possibilities) or frequency analysis.
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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