Processed client-side in your browser — files never leave your device.
Free, with no signup, account, or usage limits.
Works on any modern browser, including mobile.
About this tool
Caesar Cipher is a free online utility to encrypt/decrypt with Caesar cipher (related: caesar, cipher, encrypt). Processing runs locally in your browser — your input is not uploaded to ThothBox.
How to use
Open Caesar Cipher and paste or type your input.
Choose any options that affect the output.
Run the tool or watch the live result update.
Copy or download the output.
FAQ
What does Caesar Cipher do?
Encrypt/decrypt with Caesar cipher.
Is Caesar Cipher private?
Yes for typical use: input is processed in your browser and is not uploaded to ThothBox.
Is Caesar Cipher free?
Yes. It is free to use with no signup required.
How do I use Caesar Cipher?
Open the Caesar Cipher tool, then open Caesar Cipher and paste or type your input.