What is a GNUMERIC file?
A .GNUMERIC file is a spreadsheet created by Gnumeric. Gnumeric is an open-source spreadsheet program developed by The GNOME Project. The software uses these files to store numerical data, formulas, charts, and cell formatting. Structurally, a .GNUMERIC file is usually an XML document compressed with GZIP to save disk space. A small percentage of these files remain uncompressed as plain XML.
How to open GNUMERIC files?
The official program to open these files is Gnumeric, which runs natively on Linux systems. Because this software is not common on Windows or macOS, you might struggle to open a .GNUMERIC file on those platforms.
viewer.online/gnumeric analyzes .GNUMERIC files to identify their exact format and creator software. It shows which programs can open the file and usually previews it. If you are unsure what your file contains or if it uses the compressed or uncompressed structure, viewer.online/gnumeric will identify the actual format of your file.
Best practices and troubleshooting
If a .GNUMERIC file does not open, check if it is compressed. You can rename the file extension to .GZ and use a standard archive extraction tool to unpack the XML contents. You can then open the uncompressed XML file in a basic text editor to view the raw data.
If you need to share a .GNUMERIC file with colleagues who use standard office software, you should convert it. We recommend file conversion to sensible target formats like .XLSX or .CSV on convert.guru.
Software and tools
You can use Gnumeric to view and edit these files directly. Alternative open-source software like LibreOffice Calc also provides support for importing the Gnumeric Spreadsheet format.
Summary
viewer.online/gnumeric directly opens and previews .GNUMERIC files in the browser, eliminating the need to install software or troubleshoot compatibility issues.