Columnar Transposition Cipher
Security ToolsScramble text by reading columns in keyword order
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History
All history →Columnar Transposition Cipher — at a glance
Rearrange a message by columns, or put it back in order.
How to use it — step by step
Your text and a keyword. Spaces are removed before encoding.
Add your text
Paste or type your input into the box. The Sample button fills in an example.
Choose the options
Pick the mode and settings you need. Results update when you run the tool again.
Press Run Cipher
The result is made instantly inside your browser.
Copy the result
Use the Copy button, or send it to another tool.
Pro tips
Small things that make the result better.
Quick facts
Frequently Asked Questions
What is a transposition cipher?+
It changes the order of the letters but not the letters themselves.
Why add X padding?+
Padding makes the grid full, which some puzzles expect. Without it the last row is shorter.
Is my data safe?+
Yes. Everything runs inside your own browser. Your text, files and images are never uploaded to any server.
Is this tool really free?+
Yes — completely free, no signup, no watermark and no usage limit.