.MP file extension
To open .MP files on Windows, use a file conversion tool to convert the .mp file to a more modern format like .xls or .xlsx.
The .mp file is a spreadsheet file created by Multiplan, an older Microsoft application. To open it, you may need specialized software or conversion tools.
Last updated: March 19, 2026
Open on your device
Choose your operating system for a dedicated step-by-step opening guide.
How to open .MP files
Use these platform-specific instructions to open .MP files safely.
Windows
- Use a file conversion tool to convert the .mp file to a more modern format like .xls or .xlsx.
- Alternatively, use a DOS emulator to run the original Multiplan software if available.
Mac
- Use a file conversion tool to convert the .mp file to a more modern format like .xls or .xlsx.
- Consider using a virtual machine to emulate an older operating system that supports Multiplan.
Linux
- Install a DOS emulator like DOSBox and run Multiplan if you have access to it.
- Convert the file using a compatible file conversion tool.
iOS
- Use a cloud-based file conversion service to convert the file to a compatible format.
Android
- Use a cloud-based file conversion service to convert the file to a compatible format.
Security notes
- Be cautious when downloading conversion tools, as they may contain malware.
- Ensure that any emulation software is from a trusted source to avoid security vulnerabilities.
Recommended antivirus software
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Can't open this file?
These are the most common causes and fixes when .MP files fail to open.
Common reasons
- File won't open
- Data loss during conversion
Fix steps
- Convert the file to a more common format using a file conversion tool.
- Use an emulator to run legacy software that supports .mp files.
OS-specific troubleshooting
Convert .MP to other formats
Use conversion tools to change .MP files into formats your software supports.
What is a .MP file?
The .mp file format was used by Multiplan, a spreadsheet application from Microsoft that was popular in the early 1980s. These files contain data organized in rows and columns, similar to modern spreadsheets.
Background
Multiplan was one of Microsoft's first spreadsheet programs, released in 1982, and was available on various platforms including MS-DOS, CP/M, and Apple II. It was eventually overshadowed by Microsoft Excel, which offered more advanced features and better compatibility with other Microsoft Office products. Despite its obsolescence, some legacy systems and data archives might still contain .mp files. These files are primarily of interest to those dealing with historical data or digital preservation projects. Due to the age of the format, opening .mp files today can be challenging, requiring either emulation of old software environments or conversion to more modern spreadsheet formats.
Further reading
Authoritative resources for more details on the .MP format.
Common .MP issues
File won't open
Modern software doesn't natively support .mp files.
- Convert the file to a more common format using a file conversion tool.
- Use an emulator to run legacy software that supports .mp files.
Data loss during conversion
Some data may not convert correctly due to format differences.
- Verify the converted data against the original file.
- Try different conversion tools to find the most accurate one.
FAQ
Can I open .mp files with Excel?
Excel does not natively support .mp files, but you can convert them to .xls or .xlsx formats.
Is there a modern equivalent to Multiplan?
Microsoft Excel is the modern equivalent, offering advanced features and better compatibility.
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