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Details of the .tm3 file extension

The table below provides useful information about the .tm3 file extension. It answers questions such as:

  • What is the .tm3 file?
  • What program do I need to open a .tm3 file?
  • How can the .tm3 file be opened, edited or printed?
  • Where can I find the specifications for .tm3?
  • Which MIME-type is associated with the .tm3 extension?
  • How can I convert .tm3 files to another format?
  • What are other, similar filename extensions to .tm3?

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

.tm3 file extension details

TreeMap Document

TreeMap Document .tm3 file icon
TM3 file is a TreeMap Document. Treemap is a space-constrained visualization of hierarchical structures. It is very effective in showing attributes of leaf nodes using size and color coding. Treemap uses a very simple TAB-delimited format that includes both the attributes values and the tree structure.
Category: Document files
Application: TreeMap
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
TM3 aliases:
TM3 related links:
TM3 related extensions:

Other types of files may also use the .tm3 file extension.

.tm3 file extension error

The .tm3 file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

t3, tm, tmw, tme, tk3, m3, gm3, tmr, hm3

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

TADS 3 Compiled Game
TeXmacs Document
Catalyst Translation Memory Data
Heroes of Might and Magic III Saved Game
Gerber Mechanical Layer 1 Data
Modula-3 Source Code
Bryce Time Data
TK3 E-Book
Translation Memory Data
Wintec WBT-201 TK3 Tracklog
open .tm3 file

Can't open a .tm3 file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .tm3 file association, check the FAQ.

.tm3 file extension

Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .tm3 file extension, write to us!

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