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THE FEUTEX TOOLKIT

CSV to XLSX Workbook

Convert a CSV table into an XLSX workbook with explicit delimiter selection and safe string-cell handling.

Spreadsheets workspace● Runs in your browser
Settings & output options
01 Your input
02 Your result

How to use this tool

Paste CSV or import a text file, select its delimiter, then generate and download the workbook.

Try this example

name,id
Ada,00123
Lin,00456

Accuracy and scope

CSV input does not contain Excel formulas or workbook sheets. Values are exported as text to preserve leading zeros; this tool does not import XLSX or recalculate formulas.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.

Rename columns using a JSON object, for example {"old":"new"}. Later filters and grouping use the renamed headers. Fill empty cells after trimming and empty-row removal. Row numbering is applied after sorting and selection. The column report describes retained output rows: unique counts include empty values; numeric counts exclude blanks. Automatic delimiter detection accepts exactly one consistent comma, semicolon, pipe or tab structure; select explicitly if ambiguous.