Extract a CSV Column
Quickly export one or more columns from a CSV file. Runs entirely in your browser, so your data never leaves your device.
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Output
The result appears here as you type.
How to use Extract a CSV Column
- 1. Paste the full CSV. Drop the complete file into the input pane, however many columns it has. Only the columns you ask for will survive into the output; the rest are discarded.
- 2. List the columns to keep. In 'Columns (names or numbers, comma-separated)' type header names like name,city or 1-based positions like 1,3. The order you list them is the order they appear in the result.
- 3. Set the header flag. Keep First row is header on when selecting by name, so the tool knows where the names live. When selecting purely by number on headerless data, turn it off.
- 4. Copy the narrowed file. Copy the output containing just your chosen columns. This is also a quick way to reorder columns, since listing 3,1 emits the third column before the first.
When to use Extract a CSV Column
Extract a CSV Column pulls a subset of columns out of a wide file. Real exports carry dozens of fields when you need two, and dragging the file through a spreadsheet just to delete columns is slow. Name or number the columns you want and get a lean file back.
- Building a mailing list from a CRM dump. The customer export has thirty columns but the email tool wants name and email only. Extract those two by name and upload the result without exposing the rest of the record.
- Trimming a file before sharing. You want to send sample data to a contractor but the export includes internal cost columns. Extracting only the safe columns produces a shareable file with the sensitive fields gone.
- Reordering columns for an importer. An importer insists on sku,price,quantity in that exact order while your export is alphabetical. Listing the three names in the required order both selects and rearranges them in one step.
- Isolating one variable for a chart. For a quick histogram you need just the response_time column from a benchmark CSV. Extract it by name and paste the single column straight into your plotting tool.
Examples
Keep only two columns by name
Input
name,age,city Ada,36,London Grace,45,NYC
Output
name,city Ada,London Grace,NYC
About the Extract a CSV Column tool
Extract a CSV Column does its work locally, right in the browser. Quickly export one or more columns from 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.
You can shape the output with 2 settings, including Columns (names or numbers, comma-separated) and First row is header, and the result refreshes the moment you change one. 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
Does Extract a CSV Column cost anything?
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?
No data leaves your device. The whole tool is JavaScript that runs inside your browser tab, so there is no upload, no server-side processing and no log of what you did. If you disconnect from the internet after the page loads, it keeps working.
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?
Nothing to install and no account needed. Open the page in any up-to-date browser, including on a phone or tablet, and the tool is ready.
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.