CM1 file format description

Many people share .cm1 files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .cm1 file can be edited, converted or printed with. On this page, we try to provide assistance for handling .cm1 files.

1 filename extension(s) found in our database.

.cm1 - CaseMap 1 Data

The CM1 data files are related to CaseMap. The CM1 file is a CaseMap 1 Data. CaseMap is a fact management database application used to manage, organize and connect case.

Data files
- / -
CaseMap 1 Data related extensions:
CaseMap 10 Data
CaseMap 3 Data
CaseMap 4 Data
CaseMap 6 Data
CaseMap 7 Data
CaseMap 8 Data

Naturally, other applications may also use the .cm1 file extension. Even harmful programs can create .cm1 files. Be especially cautious with .cm1 files coming from an unknown source!

Can't open a .cm1 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 can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .cm1 file extension is often given incorrectly!

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

c1, ch1, ck1, cl1, cm, cml, cmw, dm1, fm1, m1, mc1, vm1

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

CryptoMailer Encrypted File
Panasonic VM1 Voice Data
Chemical Markup Language File
ER/Studio Data Model
ProWorx NXT Comment Data
Commander Keen Data File

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

If you find the information on this page useful, please feel free to link to this page.

If you have useful information about the .cm1 file format, then write to us! >> CM1 file