Skip to content

◇ On your device

Select CSV columns

Select and reorder CSV columns, or rename headers using an explicit mapping.

How it works

Paste a table with a header row and select its delimiter.
Enter an ordered column array and an optional {"old":"new"} mapping; empty fields keep existing columns.
Review the result and download the CSV or TSV file.

Related tools

CSV to JSON

Convert a CSV table with headers into an array of JSON objects.

Join CSV tables by key

Attach columns from a second CSV table using a shared key column.

Split a CSV into files

Divide a table into files with a chosen number of data rows, keeping headers in every part.