FMP File

What are FMP files and how to open them

Are you having problems opening a FMP file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your FMP files.

What is a FMP file?

FMP files have multiple uses, and FileMaker Pro Database is one of them. Read more about the other uses further down the page.

FileMaker Pro Database

FMP is an acronym for FileMaker Pro. Files that contain the .fmp file extension hold database files that have been created with the FileMaker Pro database software application. FileMaker Pro can be used on both Windows and Mac operating systems.

The .fmp file extension is a generic FileMaker Pro extension, rather than the version-specific extensions that are also created by the software, such as the .fp4 (version 4) and .fp5 (version 5) FileMaker Pro file extensions. This file format allows users to distribute FileMaker Pro files to users who may be operating on a different version of the software than they are.

How to open FMP files

We have identified one FMP opener that is compatible with this specific type of FMP file.

Programs that open FileMaker Pro Database files

Last updated: August 6, 2026

All known file formats using extension .FMP

While FileMaker Pro Database is a popular type of FMP-file, we know of 3 different uses of the .FMP file extension. Different software may use files with the same extension for different types of data.

Gravity Force Map File

We know that one FMP format is Gravity Force Map File. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

While we have not verified the apps ourselves yet, our users have suggested ten different FMP openers which you will find listed below.

The Fractal Mapper Map File

The Fractal Mapper Map File (extension .FMP) is a project file created by the Fractal Mapper application from NBOS Software. It stores every component and setting that makes up a fantasy or overland map inside the software - such as terrain spans, symbols, objects, grid settings, map title, color defaults, scripts, and other metadata. If you have a .FMP file, it's likely your own saved map from Fractal Mapper, with everything you see in the tool preserved for future editing.

Files in this format are written by Fractal Mapper when you save a map project. The project file is intended for later reloading in the same program to continue editing - adding symbols, adjusting the grid, modifying script settings, etc. It is not meant as a finished image output; you export to PNG, BMP, JPG or EMF when you want a picture. Maps saved as .FMP are editable, meaning what you draw, create, or place stays editable until exported.

Technically the .FMP format is plain text, human-readable, and identifies itself with certain header lines. The beginning of the file contains the ASCII signature "[Begin]" followed by "Definition:" and the phrase "The Fractal Mapper Map File Format:" which uniquely identify it. Inside you'll find many keywords such as MAPTITLE, SYMBOL, GRIDTYPE, DEFAULTCOLOR and similar terms that define parts of the project.

FMP opener for Windows

We have identified one FMP opener that is compatible with this specific type of FMP file.

Various apps that use files with this extension

These apps are known to open certain types of FMP files. Remember, different programs may use FMP files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Help us help others

File.org helps thousands of users every day, and we would love to hear from you if you have additional information about FMP file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.