Transpose CSV
Quickly transpose a CSV file. Runs entirely in your browser, so your data never leaves your device.
0 chars · 0 lines
Output
The result appears here as you type.
How to use Transpose CSV
- 1. Paste any CSV. Drop the table into the input pane. Transposition treats the data as a plain grid, so it works the same whether or not the first line is a header.
- 2. See the mirrored grid. The output is the input reflected across its diagonal: what was read left to right is now read top to bottom. An m by n table always comes back as n by m.
- 3. Copy the transposed table. Copy the result and use it directly, or paste it into a spreadsheet. Transposing is its own inverse, so running the output through the tool again returns the original file.
When to use Transpose CSV
Transpose CSV flips a table across its diagonal, exchanging rows and columns in a single deterministic step. It is the plain mathematical operation behind every 'paste special, transpose' click in Excel, but working on raw text, so it fits into copy-paste workflows and handles files a spreadsheet would be overkill for.
- Rotating a matrix for a math library. A CSV holds a matrix that numpy needs in the opposite orientation. Transposing the text before loading saves a reshape call and makes the file match the paper you are implementing.
- Turning a summary row into a column. A benchmark script prints one wide line of metric names and one of values. Transposed, it becomes a tidy two-column name-value table that drops straight into a report.
- Avoiding Excel's transpose clipboard dance. Paste-special transpose in Excel requires a copy, a destination range and prayer about formats. Pasting the CSV here and copying the result back is quicker and never touches cell formatting.
Examples
Rows become columns
Input
name,age Ada,36 Grace,45
Output
name,Ada,Grace age,36,45
About the Transpose CSV tool
Transpose CSV does its work locally, right in the browser. Quickly transpose a CSV file. There is no upload step, no queue and no account, and your data never travels over the network.
It belongs to the CSV Tools collection on EditSafely, a set of 133 small, focused CSV utilities that share the same instant, private workspace.
There is nothing to configure. Provide the input and the result appears on its own. A worked example further down the page shows exactly what the tool produces for a real input.
Running locally also makes the tool fast and dependable: results appear as you type or drop a file, there is no server outage that can take it down mid-task, and confidential data can be processed without a second thought.
Frequently asked questions
Is Transpose CSV free to use?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Is it safe to paste sensitive or confidential data?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
How much text can I process at once?
There is no fixed limit. Because the work happens on your own device rather than on a shared server, the practical ceiling is your machine's memory, which comfortably handles inputs far larger than typical online tools allow.
Do I need to sign up or install anything?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.