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What is the .FM1 File Extension?

.FM1 File Extension Description:

The application Lotus 1-2-3 from IBM Corporation uses the FM1 file extension, whenever a spreadsheet is saved. This immensely popular application revolutionized the method to work and present numerical data. This software was released on 1983 and outsold all similar programs available in the market at that time.

The name Lotus 1-2-3 is derived from the fact that this integrated application is able to perform 3 different functions; it can act as an electronic spreadsheet or worksheet able to do calculation and analysis of numerical data, as a database management system allowing users to handle large amount of information, and also being able to search specific information and display that information from these stored data, and lastly, it can act as a graphic presentation tool, permitting users to present data collected in a graphical form, making the numerical data easier to analyze and understand.

A typical Lotus spreadsheet with the FM1 file extension would consist of the following components; cell address box, cell pointer, column and row identifier, contents box, and control box. The application itself has several different content and control features, plus smarticons that can be customized. The data on these files having the FM1 file extension can be sorted in an order defined by the user. It can also be aligned in the way specified by the user, and the data in these files can be controlled using keyboard driven commands.

The cells in the Lotus spreadsheet files with the FM1 file extension can be moved or copied, by simply dragging the selected cells of the entire worksheets. These spreadsheets are also made compatible with Microsoft Excel, coupled with an advanced filter, and read and write capability to this compatible application.

Other features enjoyed by the files containing the FM1 extension is the smartlabels; a feature that allows users to summarize a certain range by simply typing a predefined term such as total, subtotal, average, etcetera. Whenever these files saved in the FM1 file extension are edited, it has the feature of automatically saving the document at regular intervals, therefore minimizing loss of data.

Author: IBM Corporation
Author URL:
Related Applications: Lotus 1-2-3
Common Path: N/A


Run a Free Scan to check for FM1 related errors & to optimize PC performance.

Do you have errors with .FM1 files?

The Frequent Cause of .FM1 files Errors to Occur:

.FM1 files errors are potential critical Windows file system errors and many times are brought on by a corrupted registry entry that should be rectified at once to protect against even further damage in other applications and/or hardware. Having these errors places your PC at risk for fatal crashes, blue screen errors and even system device failure.

Symptoms of .FM1 files Errors:

Common symptoms from .FM1 files errors include slower personal computer performance, long application load times, trouble saving documents, extended suspensions in software functions, software closes without showing an error, input freezes and applications crash.

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What is the .FM1 File Extension?    |    How to Fix .FM1 File Extension Errors    |    Repair .FM1 File Errors