Free Online Column Extractor Tool

1. Paste your CSV into the input box.
2. The columns appear as buttons labelled with their header name and index.
3. Click the columns you want, in the order you want them output.
4. The extracted CSV updates live with only those columns.
5. Copy the result for use in another tool or import.

Real-world CSV files often carry far more columns than you need for a given task — an export might have forty fields when your import only wants three. This extractor parses the CSV (per RFC 4180), lists every column by its header name alongside its zero-based index, and lets you tick the ones to keep. The output is a fresh, smaller CSV containing only those columns with the header row preserved.

Selection order matters: columns appear in the output in the order you click them, so you can both subset and reorder in one step. That is handy when a target system expects columns in a specific sequence, or when you want to move a key column to the front. Both the header name and the numeric index are shown, so the choice is unambiguous even when headers are blank or duplicated.

Typical uses include trimming a customer export down to email and name for a mailing tool, isolating a few measurement columns from a sensor log, or reshaping a file before importing it. The whole operation runs in your browser, so sensitive columns never leave your machine.