Opening an FM3 File

The FM3 file type is primarily associated with Lotus 1-2-3.

FM3	File extension: FM3
	File type:	spreadsheet file

What is an FM3 file?

FM3 files mostly belong to Lotus 1-2-3. Lotus 1-2-3 Spreadsheet files with the FM3 extension file primarily store spreadsheet data. They hold rows, columns, formulas, and cell formats used in older spreadsheet programs.
Primary use:
some of FM3 files are created by Lotus 1-2-3. This means the file is meant to work as a legacy spreadsheet document for data calculation and analysis.
Alternative use:
Some FM3 files have been identified as FrameMaker Documents. In this case the file may contain structured text and layout information for document publishing.

If your file is a Lotus 1-2-3 spreadsheet, use the Lotus software (or a compatible converter) to view and edit its data.

If it appears to be a FrameMaker document, consider using FrameMaker or related tools.

FilExt.com note: For further details on Lotus software and legacy file formats, visit IBM.

How to open FM3 files

You need a suitable software like Lotus 1-2-3 to open an FM3 file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your FM3 file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a FM3 file directly in the browser:. Just drag the file onto this browser window and drop it.

Online FM3 Text Viewer

Choose your .fm3 file to analyze

or drag and drop it here

Online File Viewer

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Programs that open and convert FM3 files:

Lotus 1-2-3
See the previous paragraphs to learn more about the main application. FM3 files are often referred to as Lotus 1-2-3 spreadsheets because this type of file is primarily created or used by this software.
1-2-3 (Format File) by IBM
This was a Lotus product. Lotus was bought out by IBM.
FileMaker (Ver. 3 Database Document) by FileMaker, Inc.
The Mime types used with this association are: application/filemaker.
Harvard Graphics (Device Driver) by Harvard Graphics
Harvard Graphics was taken over by Serif. Related links: Serif

Technical Data for FM3 File Extension

File classification:

Spreadsheet

Related files:

wk1, wk3, wks, 123, fm, fm2, tas, wk4, fms, dvc

an fm3 spreadsheet file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with FM3 files

Associate the FM3 file extension with the correct application.
Update your software that should actually open spreadsheet files. Because only the current version supports the latest FM3 file format. Search, therefore, e.g. on the manufacturer website after an available Lotus 1-2-3 update.
To make sure that your FM3 file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .FM3 file online - secure, fast, and no downloads needed.