XLSX File Converter — Convert .XLSX to CSV, DTA, FEATHER & More

XLSX is the default spreadsheet format used by Microsoft Excel since 2007. It stores structured tabular data, formulas, charts, and pivot tables using XML insid…

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Source Format

Microsoft Excel Open XML

.xlsx
Spreadsheets

XLSX is the default spreadsheet format used by Microsoft Excel since 2007. It stores structured tabular data, formulas, charts, and pivot tables using...

application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
Learn more

Convert XLSX to (16 formats)

Comma-Separated Values
.csv
CSV
Stata Data File
.dta
DTA
Feather / Arrow
.feather
FEATHER
Hierarchical Data Format 5
.h5
H5
HyperText Markup Language
.html
HTML
JavaScript Object Notation
.json
JSON
Markdown
.md
MD
OpenDocument Spreadsheet
.ods
ODS
Apache ORC
.orc
ORC
Apache Parquet
.parquet
PARQUET
Portable Document Format
.pdf
PDF
Python Pickle
.pkl
PKL
LaTeX Source
.tex
TEX
Plain Text File
.txt
TXT
Microsoft Excel Spreadsheet (Legacy)
.xls
XLS
Extensible Markup Language
.xml
XML
.xlsx

Select a Target Format

Choose one of the 16 output formats on the left to configure your conversion options.

Popular XLSX Conversions

XLSX→CSVXLSX→DTAXLSX→FEATHERXLSX→H5XLSX→HTMLXLSX→JSONXLSX→MDXLSX→ODSXLSX→ORC

What is a .XLSX file?

XLSX is the default spreadsheet format used by Microsoft Excel since 2007. It stores structured tabular data, formulas, charts, and pivot tables using XML inside a compressed archive. XLSX improves data integrity, reduces file size, and supports advanced analytics and automation. It is widely supported by spreadsheet software including Google Sheets and LibreOffice.

File Extension
.xlsx
MIME Type
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
Category
Spreadsheets
Output Formats
16 supported

Frequently Asked Questions

A .XLSX file is a Microsoft Excel Open XML format used in the spreadsheets category. You can view the full technical details on this page, or convert it to another format using the tool above.