The File Extensions Database

.G1A File Extension

  • Developer by: Casio
  • Category: Misc Files

What is an .G1A file?

.G1A is Casio Graphing Calculator Add-in File

A G1A file is a data file saved in the G1A format used by various Casio graphing calculators, including fx-9860G, fx-9860GII, and fx-CG series calculators. It contains an add-in, which is typically used to add small games or utilities to select Casio graphing calculators. G1A files are written in C programming language.

G1A files are most commonly used by older Casio graphing calculators from the 2000s and were replaced by G2A and .G3A files in newer versions of Casio graphing calculators. Since the files are not meant to be manually opened, you most likely will only encounter the files when transferring programs from or to the storage or main memory directories of a graphing calculator.

The Casio FA-124 program allows you to transfer G1A files between your computer and graphing calculator. After copying G1A files to your calculator using FA-124 and a USB cable connection between a PC and the calculator, you can then see the add-in from the main menu when you start the calculator.

NOTE: The fx-Manager PLUS Subscription program also allows you to emulate fx- series calculators and open G1A files.

Programs that open Casio Graphing Calculator Add-in File
Casio FA-124
fx-Manager PLUS Subscription

How to solve problems with G1A files

  • Associate the G1A file extension with the correct application. On :
    Windows: Right click on any G1A file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.G1A files". Mac: Right click (or Ctrl-click) the G1A 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 .G1A is Casio Graphing Calculator Add-in File. Because only the current version supports the latest G1A file format. Search, therefore, e.g. on the Casio manufacturer website after an available .G1A is Casio Graphing Calculator Add-in File update.
  • To make sure that your G1A file is not corrupted or virus-infected, get the file again and scan it with antivirus software.