Which Excel formats are supported?

.xlsx and .xls files. Both modern and legacy Excel formats are accepted.

Which delimiter does the CSV use?

Comma, semicolon, or tab — configurable before conversion.

No, everything is processed in your browser using SheetJS. No data leaves your device.

🇬🇧WebFileTools/Excel to CSV Converter

1. Séparateur CSV de sortie

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Glissez un fichier .xlsx ou .xls ici

ou cliquez pour parcourir

WebFileTools Excel to CSV Converter exports your Excel spreadsheets as CSV files directly in the browser.

Import your .xlsx or .xls file, choose the delimiter, then download the resulting CSV.

Which Excel formats are supported?: .xlsx and .xls files. Both modern and legacy Excel formats are accepted.
Which delimiter does the CSV use?: Comma, semicolon, or tab — configurable before conversion.
Is the file sent to a server?: No, everything is processed in your browser using SheetJS. No data leaves your device.

Convert your CSV files to Excel (.xlsx) in your browser. Choose your delimiter (comma, semicolon, tab) and download the result. 100% local.

Convert JSON to CSV and vice versa. File import and one-click export. 100% in the browser.

Validate, format, and minify JSON. Syntax highlighting and file import. 100% in the browser.