The File Extensions Database

.FCS File Extension

  • Developer by: ISAC
  • Category: Data Files
  • Format: Binary

What is an .FCS file?

.FCS is Flow Cytometry Standard File

Data file standard used for writing and reading flow cytometry experiment data; contains one or more data sets, which are a collection of information produced by a cytometer.

The FSC standard is developed and maintained by the International Society for Advancement of Cytometry (ISAC). It was developed in 1984 and became a standard format supported by a large amount of flow cytometry software and hardware.

Flow cytometry is a biophysical technology for analyzing the chemical and physical characteristics of particles as they pass through a laser. It is used for cell sorting, biomarker detection, protein engineering, and cell counting and applied in basic research, clinical trials, and clinical practice. Most commonly, flow cytometry is used for diagnosing health disorders, such as blood cancers.

Programs that open Flow Cytometry Standard File
Verity Software House V-Comp
Verity Software House V-Comp
File Type 2 FCEUX Save State File
Category: Game Files

Save state created by FCEUX, an NES, Famicom, and Famicom Disk System emulator; stores the complete state of a game at a point in time.

FCS files along with other FCEUX files are located in the ~/.fceux directory.

FCEUX is an advanced version of the FCE Ultra emulator. It is designed to provide functions from different FCE Ultra branches, such as FCEU rerecording, FCEUXD, and FCEUXDSP.

Programs that open FCEUX Save State File
File Type 3 First Choice Spreadsheet
Category: Spreadsheet Files

Spreadsheet created with the First Choice productivity suite.

How to solve problems with FCS files

  • Associate the FCS file extension with the correct application. On :
    Windows: Right click on any FCS file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.FCS files". Mac: Right click (or Ctrl-click) the FCS file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .FCS is Flow Cytometry Standard File. Because only the current version supports the latest FCS file format. Search, therefore, e.g. on the ISAC manufacturer website after an available .FCS is Flow Cytometry Standard File update.
  • To make sure that your FCS file is not corrupted or virus-infected, get the file again and scan it with antivirus software.