Automatic Caesar Breaker
Crack Caesar ciphers instantly using English frequency analysis. No key required.
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Current Shift:
Analysis of All Shifts
Examples
Common Caesar (Shift 13)
Decrypts "Common Caesar cipher example" (ROT13).
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Shift 3 (A -> D)
Classic sentence shifted by 3.
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Harder Example
Another variation of the fox sentence.
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How It Works
This tool tries every possible shift (0-25) and calculates the "Entropy" of the result based on English letter frequencies. The lower the entropy, the more likely the result is valid English text.
Auto-Detection
Instant Results
Secure (Client-side)