.xlsx File Extension

Microsoft Excel Open XML Spreadsheet

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What is a .xlsx file?

The XLSX file format is the default spreadsheet format used by Microsoft Excel, starting with Excel 2007. It's based on the Open XML standard, which uses a combination of XML and ZIP compression to store spreadsheet data. This format allows for efficient storage of large amounts of data, formulas, charts, and other spreadsheet elements. XLSX files can contain multiple worksheets, each organized into rows and columns of cells. These cells can hold various types of data, including numbers, text, dates, and formulas. The format also supports rich formatting options, such as fonts, colors, borders, and cell styles. Because it's an open standard, XLSX files are widely supported by other spreadsheet applications, making it a versatile format for data exchange and collaboration. The use of XML allows for easier parsing and manipulation of the data programmatically, making it suitable for automated data processing and reporting. Furthermore, the ZIP compression reduces file size, making it easier to share and store large spreadsheets. The XLSX format is a significant improvement over the older XLS format, offering better data integrity, security, and interoperability.

.xlsx File

Microsoft Excel Open XML Spreadsheet

Compatible Software Alternatives

Software Compatibility

Windows

  • Microsoft Excel
  • LibreOffice Calc
  • OpenOffice Calc
  • Google Sheets (via web browser)
  • WPS Office Spreadsheets

macOS

  • Microsoft Excel
  • LibreOffice Calc
  • OpenOffice Calc
  • Numbers
  • Google Sheets (via web browser)
  • WPS Office Spreadsheets

Linux

  • LibreOffice Calc
  • OpenOffice Calc
  • Gnumeric
  • Calligra Sheets
  • Google Sheets (via web browser)

Mobile

  • Microsoft Excel
  • Google Sheets
  • WPS Office
  • LibreOffice Viewer (Android)

Alternative File Formats

Related Categories

Data Files Archive FilesAudio FilesDocument Files

Frequently Asked Questions About .xlsx Files

To open a .xlsx file, you need compatible software. Here are some options:

  • Microsoft Excel
  • LibreOffice Calc

Check the "Software Compatibility" section above for a complete list of programs that can open .xlsx files on different operating systems.

To convert a .xlsx file to another format, you can:

  1. Use compatible software: Many programs that open .xlsx files also allow saving or exporting to different formats. For example, you might try using Microsoft Excel or Microsoft Excel.
  2. Try online conversion services: Websites like Zamzar, CloudConvert, or Online-Convert can transform files between formats without installing software.
  3. Convert to recommended alternatives: For .xlsx files, consider converting to .XLS, .ODS, .CSV for better compatibility.
  4. Specialized conversion tools: Search for ".xlsx converter" to find tools specifically designed for this file type.

Note: Converting files may result in some loss of formatting, quality, or functionality depending on the compatibility between formats.

If you're having trouble opening a .xlsx file, try these troubleshooting steps:

  1. Verify the file extension is correct: Sometimes files may be incorrectly named. Make sure the file truly is a .xlsx file.
  2. Update your software: Ensure you're using the latest version of your chosen program.
  3. Try alternative software: If one program doesn't work, try another from our compatibility list.
  4. Check for file corruption: The file might be damaged. Try to obtain a new copy if possible.
  5. Look for file converters: Converting to a more common format might help.

Like any file type, .xlsx files can be safe or potentially risky depending on their source:

  • From trusted sources: Files from reputable websites, colleagues, or friends are generally safe.
  • From unknown sources: Exercise caution with files from unfamiliar websites or emails.

Safety recommendations:

  • Always scan files with antivirus software before opening them
  • Keep your operating system and applications updated
  • Be particularly cautious with executable file types

Common issues with .xlsx files include:

  • Compatibility problems: Older or newer versions of software may not fully support certain .xlsx files
  • Missing elements: Fonts, media, or other components may not transfer correctly between systems
  • File corruption: Incomplete downloads or transfer errors can damage files
  • Format variations: Different software may implement the .xlsx format in slightly different ways

If you're experiencing issues with a specific .xlsx file, you might need to:

  • Try opening it with alternative software
  • Ask the file creator to save it in a different format
  • Look for specific patches or updates for your software

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