What is the Caesar Cipher Tool?
The Caesar cipher is one of the oldest secret codes. Each letter is moved a fixed number of places in the alphabet. With a shift of 3, A becomes D and B becomes E.
Choose a shift and encode your message, or decode one you received. If you do not know the shift, pick "Try all shifts" and look for the line that makes sense. It is a fun puzzle tool, but not real security.
How to use it
- Pick Encode, Decode or Try all shifts.
- Type or paste your message and set the shift.
- Copy the result from the right box.
Why people like this tool
Any shift
Move letters by 1 to 25 places.
Crack mode
See all 25 shifts at once.
Keeps the rest
Numbers, spaces and signs do not change.
Case kept
Capital and small letters stay.
