Filename Extensions
If you are seeking information about file extensions, then you are in the right place at right time.

Details of extension .c21

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

Below, you can find answers to the following questions:

  • What is the .c21 file?
  • Which program can create the .c21 file?
  • Where can you find a description of the .c21 format?
  • What can convert .c21 files to a different format?
  • Which MIME-type is associated with the .c21 extension?
CARE-S InfoWorks Defined Pollutant Detail Data .c21 file icon

CARE-S InfoWorks Defined Pollutant Detail Data

C21 file is a CARE-S InfoWorks Defined Pollutant Detail Data. Computer-Aided Rehabilitation Program for Sewers (CARE-S) is a software program that supports efficiency in rehabilitation decisions.
Detailed description not available
Category: Data files
Application: CARE-S
Program name: -
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
Related extensions:
CARE-S InfoWorks Trade Waste Data
CARE-S InfoWorks Wastewater Data
CARE-S InfoWorks Inflow Data
CARE-S InfoWorks Real Time Control Data
CARE-S InfoWorks Simulation Parameters Data
CARE-S InfoWorks Rainfall Data
CARE-S InfoWorks Catchment Runoff Data
CARE-S InfoWorks Land Use Data
CARE-S InfoWorks Runoff Parameters Data

Other types of files may also use the .c21 file extension. If you have helpful information about .c21 extension, write to us!

Is it possible that the filename extension is misspelled?

We found the following similar extensions in our database:

Cybernet v2 Document
ComputerEyes Raw Image
Creeper World Game Map Data
POV-Ray Include File

The .c21 filename extension is often given incorrectly!

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

21 (1), ce1 (1), c2l (1), cw1 (1), c2w (1)

Can't open a .c21 file?

If you want to open a .c21 file on your computer, you just need to have the appropriate program installed. If the .c21 association isn't set correctly, you may receive the following error message:

Windows can't open this file:

File: example.c21

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 from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program whith which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2003/2008/2012/2016, Windows 7, Windows 8, Windows 10, Linux, FreeBSD, NetBSD, OpenBSD, Mac OS X, iOS, Android

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