How to convert Excel to CSV online without a registry or sign up?

Upload your file to TinyWeb, choose your column separator, and click convert. The script parses the spreadsheet and downloads the CSV instantly, requiring no personal details.

How does it handle multi-sheet Excel workbooks?

You can select to convert only the active/first sheet, or export all sheets into individual CSV files packaged together in a single ZIP download.

Are my database numbers and formulas preserved?

TinyWeb extracts calculated cell values rather than raw formulas, ensuring database columns contain actual numbers and text characters ready to load.

Convert Excel to CSV Online

Convert Excel to CSV online: convert spreadsheets to flat CSV rows locally. 100% secure, free tool.

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Drag & Drop an Excel file (.xlsx, .xls) here, or click to browse

How to Use Convert Excel to CSV Online

Select your Excel file (.xlsx, .xls) or drag it into the upload box.
Select target options (comma or semicolon delimiter, active sheet only).
Click 'Convert to CSV' to run the local export script and download the CSV file.

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"Parsing structured files like CSV, XML, and Excel on the client side using pure ECMA-262 scripting ensures zero data leakage. When data conversion happens within browser sandboxes, standard spreadsheet privacy complies automatically with enterprise guidelines."

— Sarah Jenkins, Data Infrastructure Advisor, Global Informatics Alliance

Convert Excel Spreadsheets to Tabular CSV Files

Microsoft Excel is standard for data entry, but importing workbooks into SQL databases, analysis programs, or custom code requires flat CSV files. Our Excel to CSV utility converts xlsx and xls sheets into standard Comma-Separated Values plain text.

100% Secure Client-Side Parsing

Spreadsheets often contain confidential salary lists, customer details, or pricing tables. TinyWeb extracts your sheets using client-side JavaScript. Your spreadsheet data is never sent to external servers, protecting your privacy.

UTF-8 Preservation

Our converter keeps character profiles intact (UTF-8 encoding), ensuring special characters, accents, and non-English scripts convert cleanly without formatting issues.