CSV to Excel
Convert CSV files to Excel XLSX spreadsheets.
CSV to Excel turns a CSV file into a downloadable .xlsx workbook entirely in your browser using SheetJS.
Frequently Asked Questions
Does my data leave the browser?
Processing stays in your browser. Nothing is uploaded to ToolWorld servers.
Do formulas survive?
CSV has no formulas — you get values only.
Multiple sheets?
Input CSV becomes a single sheet workbook.