Sort CSV rows by a column

FileGizmo sorts CSV data by one selected column without sending the file to a server. Choose a CSV and the local worker reads its headers. Select a column, ascending or descending direction, and text, numeric, or date comparison. The header stays at the top while data rows are reordered, previewed, and exported using the detected delimiter.

The sort is stable: rows with equal comparison values keep their original relative order, which prevents unrelated columns from changing unpredictably. Text comparison uses locale-aware, case-sensitive ordering. Numeric mode treats valid finite numbers as numbers and places invalid or blank values after valid values. Date mode compares parseable timestamps and similarly moves unrecognized values to the end. Because dates such as 03/04/2026 are locale-ambiguous, ISO-style dates are safer. CSV parsing occurs in chunks inside a browser worker so the page remains responsive. Formula-like cell values are escaped during export to reduce spreadsheet injection risk. Review the result before replacing the source file, since sorting deliberately changes row order and may affect systems that rely on it.