Select and reorder CSV columns using a comma-separated list of column numbers.
Type or paste on the left — the result updates as you type.
Column numbers start at 1. All rows, including the header if present, are treated alike. Missing columns are rejected.
Up to 100,000 UTF-16 units per input and 1,000,000 per result. See the supported formats and examples below.
Tool page updated: 2026-09-27
