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XLSX to PARQUET converter, without the upload.

Turn XLSX spreadsheets into PARQUET. It is converted in your browser, so the file never leaves your device.

Drop XLSX files here

or choose from your computer paste with Ctrl V

Ready · other file types work too0 bytes uploaded, ever

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How to convert XLSX to PARQUET

  1. Add your XLSX spreadsheets

    Drop XLSX (Excel) files onto the box above, or click it to choose them. ToAny reads the file's contents to detect the type, so a wrong extension does not matter.

  2. PARQUET is already chosen

    Press Convert. There is nothing else to set. The work happens in this tab.

  3. Download

    Save the result. When one file produces several PARQUET files they come as a single ZIP.

Why ToAny

  • Private by construction

    The XLSX to PARQUET converter is part of this page and runs inside your browser. Your spreadsheets are never sent to ToAny or to anyone else.

  • No upload, no queue

    Nothing has to travel to a server and back, so the conversion starts the moment you press Convert, even on a slow connection.

  • Free, without an account

    No sign-up, no email address and no watermark. Add several files and download them together as a ZIP.

XLSX to PARQUET: what to expect

XLSX is awkward for scripts, databases and import tools that expect plain text. Parquet is compact, typed and fast to analyse. XLSX is at home in spreadsheets with formulas, formatting and several sheets; PARQUET is the usual choice for large analytical datasets.

One XLSX can produce several PARQUET files; when it does, they are offered together as a ZIP download.

Each column gets one type chosen from all of its values: a column is numeric only if every non-empty cell is a number, and anything mixed, or a value such as a ZIP code with a leading zero, stays text. A workbook with several sheets gives one file per sheet.

XLSX vs PARQUET

XLSX

Excel workbook

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.

Opens in Excel, Google Sheets, Numbers, LibreOffice Calc

XLSX converter
PARQUET

Apache Parquet table

Parquet stores a table column by column, with the type of every column recorded in the file and each column compressed on its own. That makes it small and quick to scan for analysis, which is why data lakes and warehouses use it. It cannot be read in a text editor or a spreadsheet.

Opens in pandas, Spark, DuckDB, BigQuery, Snowflake and other analytics tools; not Excel

PARQUET converter
XLSX compared with PARQUET
XLSXExcel workbookPARQUETApache Parquet table
Stands forOffice Open XML WorkbookApache Parquet
TypeSpreadsheet workbookColumnar data file
CompressionZIP container of XMLLossless (per column: Snappy, Zstandard, gzip and others)
Introduced2007, by Microsoft2013, by Twitter and Cloudera, now the Apache Software Foundation
Opens inExcel, Google Sheets, Numbers, LibreOffice Calcpandas, Spark, DuckDB, BigQuery, Snowflake and other analytics tools; not Excel
Best forSpreadsheets with formulas, formatting and several sheetsLarge analytical datasets
File extension.xlsx.parquet

Questions

Are my spreadsheets uploaded anywhere?

No. The XLSX to PARQUET conversion runs inside your browser, on your own phone or computer. The file is not sent to ToAny or to anyone else.

Is anything lost when converting XLSX to PARQUET?

The values are kept. Anything PARQUET has no way to express, such as formatting, formulas or nesting, is simplified or left out.

Can I convert several XLSX files at once?

Yes. Add as many as you like, convert them together and download each result or all of them as one ZIP.

How do I convert XLSX to PARQUET on Windows, Mac, iPhone or Android?

The steps are the same everywhere because ToAny runs in the web browser: open this page in a current version of Chrome, Edge, Safari or Firefox, add the XLSX file, press Convert and save the PARQUET. There is nothing to install.

Is there a file size limit?

Yes. Spreadsheet files up to 150 MB are accepted; a larger file is refused with a message. Beyond that the limit is your device's memory, since nothing is uploaded; a computer copes with large files better than a phone.