MyAITools
Cipher

Caesar Cipher

Caesar Cipher is a free online cipher that helps you encrypt or decrypt text with the classic Caesar shift cipher; choose any shift from -25 to 25. Caesar Cipher uses 2 input fields, returns 1 output value, and runs in your browser on the device.

Key facts

Inputs
2 fields: Text and Shift
Outputs
1 value: Result
Runtime
your browser on the device
Mode
Cipher
Privacy
Files and text stay in the browser session.
Cost
$0, no account required

How to use Caesar Cipher

  1. 1

    Paste or fill in the input

    Enter your text or values into the input fields on the page.

  2. 2

    Run the utility

    Click Compute to run the utility in your browser and review the result.

  3. 3

    Copy the output

    Copy the output value you need from the result panel.

Caesar Cipher details

First, enter Text in Caesar Cipher. Next, review Result. Additionally, Caesar Cipher uses 2 input fields and 1 output block so the result is easy to scan and copy.

The Caesar cipher shifts every letter by a fixed number of positions in the alphabet. Pick a positive shift to encrypt and the negative of that shift to decrypt. Case is preserved and non-letter characters pass through unchanged. Runs entirely in your browser.

Common searches

  • caesar cipher
  • caesar shift cipher
  • caesar encoder
  • caesar decoder
  • shift cipher
  • letter shift cipher

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Frequently asked

What is Caesar Cipher?

Caesar Cipher is a free online cipher that helps you encrypt or decrypt text with the classic Caesar shift cipher; choose any shift from -25 to 25. Caesar Cipher uses 2 input fields, returns 1 output value, and runs in your browser on the device.

What inputs and outputs does Caesar Cipher use?

Caesar Cipher uses 2 input fields: Text and Shift. Caesar Cipher returns 1 output value: Result.

Do my files and data stay private?

Yes. Caesar Cipher runs entirely in your browser using your device's CPU. Files and text are never uploaded to our servers, so your data stays private.

How do I use Caesar Cipher?

Open Caesar Cipher, paste or fill in the input fields, and the result updates instantly. Caesar Cipher runs in your browser with no upload and no waiting.

Which browsers does Caesar Cipher support?

Any modern browser works in Chrome, Firefox, Safari, and Edge on desktop and mobile. Caesar Cipher uses standard web APIs and does not require any plugin, extension, or sign-up.