Column Extractor
Extract one or more columns from CSV, TSV or delimited text online. Pick columns by number, choose the input delimiter and set the output separator.
What is the Column Extractor?
The ByteTools Column Extractor pulls specific columns out of delimited text such as CSV, TSV or space-separated data.
- Extract single or multiple columns by index
- Supports comma, tab, space and custom delimiters
- Reorders columns in the order you list them
- Choose or keep the output delimiter
- Live result with copy and download
- 100% private — data stays in your browser
How to use the Column Extractor
- 1
Paste your delimited text (one record per line).
- 2
Choose the input delimiter: comma, tab, space or a custom character.
- 3
Enter the column numbers to extract, e.g. 1,3 (columns count from 1).
- 4
Pick the output delimiter or keep the original.
- 5
Copy or download the extracted columns from the result box.
About the Column Extractor
The ByteTools Column Extractor pulls specific columns out of delimited text such as CSV, TSV or space-separated data. Tell it which delimiter separates your columns, list the column numbers you want, and it rebuilds just those columns in the order you asked for.
It is ideal for isolating an email column from an export, grabbing names and phone numbers from a spreadsheet paste, or reordering fields before importing elsewhere. You can keep the original delimiter or switch the output to commas, tabs or any custom separator.
Processing is 100% local in your browser with JavaScript — your data is never uploaded, stored or logged. That keeps customer lists, exports and private spreadsheets completely on your device.
Frequently asked questions
How do I extract a single column from CSV data?
Paste your CSV, set the input delimiter to comma, and enter the column's number (columns count from 1). The tool outputs only that column, one value per line, ready to copy.
Can I extract several columns and reorder them?
Yes. List the column numbers separated by commas in the order you want them, such as 3,1,2. The output follows that exact order, so you can rearrange fields while extracting them.
What if my data is separated by tabs or spaces instead of commas?
Choose Tab or Space as the input delimiter, or pick Custom and type your own separator. The tool splits each line on that delimiter before extracting the columns you requested.
What happens if a row has fewer columns than I ask for?
Missing columns are treated as empty, so the output keeps every row aligned instead of skipping short rows. This prevents your extracted data from drifting out of sync.
Is my spreadsheet data uploaded anywhere?
No. Everything is processed locally in your browser with JavaScript. Nothing is transmitted or stored, making it safe for confidential exports and customer data.
Guides for Column Extractor
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