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XLSX File Format

XLSX is the spreadsheet format of Microsoft Excel since 2007: sheets, formulas and formatting in one file.

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Maximum 1 GB

XLSX at a Glance

Type	Spreadsheets
Full name	Office Open XML Workbook
File extensions	.xlsx
MIME type	`application/vnd.openxmlformats-officedocument.spreadsheetml.sheet`
Developed by	Microsoft
Introduced	2007

Convert XLSX to Other Formats

Convert Other Formats to XLSX

Frequently Asked Questions

What is XLSX used for?

XLSX opens in Excel, Google Sheets, LibreOffice Calc and Numbers, with sheets and formatting kept.

How do I open XLSX files?

XLSX files open in Microsoft Excel, LibreOffice Calc, Google Sheets, Apple Numbers. If you don't have such a program, convert the file to a format you can open with the converter on this page — free and without registration.

How do I convert XLSX files?

Drop the file into the converter at the top of this page, choose the output format and click "Convert". Files are deleted from our server automatically after 48 hours.

Is it free?

Yes, all converters are free, with no registration and no watermark.

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