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Excel & CSV

Q: Which spreadsheet formats are supported?

The Excel tools support modern OpenXML workbooks (.xlsx), legacy spreadsheets (.xls), and delimited text files (.csv).

Q: Is my proprietary financial data secure?

Yes. Tabular data parsing executes locally in your browser memory via SheetJS with no data transmission to external servers.

Q: Can I open exported workbooks in Google Sheets or LibreOffice?

Yes. Generated .xlsx files comply with standard OpenXML specifications and open cleanly in Microsoft Excel, Google Sheets, Apple Numbers, and LibreOffice Calc.

Q: How are formulas handled when splitting or merging?

Calculated formula values and data types are preserved. Internal references to external sheets in split files convert to static calculated values.

View, edit, merge, and convert spreadsheets and CSV files.

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Excel & CSV FAQ

Which spreadsheet formats are supported?

Is my proprietary financial data secure?

Can I open exported workbooks in Google Sheets or LibreOffice?

How are formulas handled when splitting or merging?

Excel & CSV

Excel Viewer and Editor

Excel to CSV

CSV to Excel

Excel to JSON

JSON to Excel

Merge Excel Files

CSV to JSON

JSON to CSV

Remove Duplicate Rows

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Excel & CSV FAQ