Convert Excel to CSV

FileGizmo converts a worksheet from a modern Excel XLSX workbook into a UTF-8 CSV file without uploading it. Choose a workbook and the browser worker reads its sheet names locally. Select the worksheet you need, choose comma, semicolon, or tab separation, then convert and download the result. This is useful for importing spreadsheet data into databases, analytics tools, CRMs, and applications that accept plain tables.

CSV stores one flat worksheet and cannot preserve formulas, colors, charts, merged cells, multiple tabs, or Excel formatting. FileGizmo exports the values stored in the chosen cells; it does not recalculate formulas like desktop Excel. Dates are written as readable values when the workbook exposes them, and potentially dangerous spreadsheet-formula prefixes are escaped in the CSV output. Empty trailing rows are omitted by the parser. The XLSX package is loaded only inside the data worker, keeping unrelated tool pages light. Review important identifiers such as long account numbers and leading-zero codes after conversion because spreadsheet applications may have already interpreted their cell types.