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XLSX converter, in your browser.

Convert XLSX (Excel) files to CSV, JSON, PDF and TSV and more, or turn other files into XLSX. Most of these conversions run in your browser and upload nothing. The ones marked “uploads” run on our server and ask first.

Drop XLSX files here

or choose from your computer paste with Ctrl V

Ready · other file types work too0 bytes uploaded, ever

About XLSX

XLSX is Excel's format since Office 2007. A workbook can hold many sheets with formulas, formatting and charts. Programs and scripts usually prefer the same data as CSV or JSON.

XLSX is awkward for scripts, databases and import tools that expect plain text. XLSX opens straight into Excel with columns and data types intact.

Stands for
Office Open XML Workbook
Type
Spreadsheet workbook
Compression
ZIP container of XML
Introduced
2007, by Microsoft
Opens in
Excel, Google Sheets, Numbers, LibreOffice Calc
Best for
Spreadsheets with formulas, formatting and several sheets
File extension
.xlsx
MIME type
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet

Questions

How do I open an XLSX file?

XLSX opens in: Excel, Google Sheets, Numbers, LibreOffice Calc. If your device or app cannot open it, convert it to CSV or JSON above.

What can I convert XLSX to?

toany converts XLSX to CSV, JSON, PDF, TSV, XLS, ODS, YAML, XML, HTML, MD, XLSM, XLSB, FODS, NDJSON, JSONL, PARQUET, ARROW, FEATHER and SQLITE.

What can I convert to XLSX?

toany creates XLSX files from CSV, TSV, XLS, ODS, JSON, YAML, TOML, XML, XLSM, XLSB, FODS, DBF, MD, HTML, NDJSON, JSONL, PARQUET, SQLITE, MDB and ACCDB.

Are my files uploaded?

It depends on the conversion. Most run inside your browser and upload nothing. Some (XLSX to PDF) cannot be done reliably in a browser and run on our server instead: those are marked, ask for your consent first, and the file is deleted after conversion.

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