Caesar Box Cipher

Transpose text in a rectangular grid with the Caesar Box cipher. Set the grid dimensions and read the rearranged characters.

Free · No sign-up required

Text input

Your result is ready to copy or download after running.

Tool options

About Caesar Box Cipher

Caesar Box is a transposition cipher used in the Roman Empire, in which letters of the message are written in rows in a square (or a rectangle) and then, read by column.

Input: text. Output: text.

Format reference: Caesar Box Cipher background and specification

Example

Use “Try example” to load this public sample and its settings, then run it.

Settings used in this example
ParameterExample valueInput and choices
Box Height"4"Number

Input

Hlodeor!lWl

Result

HelloWorld!

Parameters

ParameterDefault valueInput and choices
Box Height1Number

Before interpreting the result

Use the exact key encoding, mode, padding and IV expected by the source system. Historical ciphers are useful for learning and analysis. Encoding alone provides no confidentiality.

How to use this page

  1. Paste your input or open a local file.
  2. Adjust tool options if needed, then choose Run tool.
  3. Copy the result or download the original output bytes.

Inputs and results are not added to the public catalogue or saved in the URL. Processing happens in your browser; HTTP Request and DNS over HTTPS send the requests you explicitly run. Files up to 128 MiB can be opened; decompression and image tools may have smaller processing limits. Large results have a shortened preview. Text and HTML downloads use UTF-8; binary downloads preserve output bytes. Pasted text follows browser newline handling; open a file when exact input bytes matter.

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