GRB File Type

- The quick facts

What are GRB files and how to open them

Are you having problems opening a GRB file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a GRB file?

GRB files have multiple uses, and Gridded Binary Data is one of them.

Gridded Binary Data

We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

How to open GRB files

Important: Different programs may use files with the GRB file extension for different purposes, so unless you are sure which format your GRB file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested 10 different GRB openers which you will find listed below.

Last updated: March 15, 2022

More file formats using the GRB extension

Through our research of GRB files, we know that the following formats exist. However, we have not yet analyzed them in detail, and we would love to hear from you if you have information about either of them.


HP-48 Graphic Object Bitmap

HP-49 Graphic Object Bitmap

Various apps that use files with this extension

These apps are known to open certain types of GRB files. Remember, different programs may use GRB files for different purposes, so you may need to try out a few of them to be able to open your specific file.

MaxSea ApplicationMaxSea ApplicationUser submitted
GrStudioGrStudioUser submitted
SquidSquidUser submitted
GRBackPro - Professional backup for Win NT/98/95GRBackPro - Professional backup for Win NT/98/95User submitted
ImagenationImagenationUser submitted
Airmail ViewerAirmail ViewerUser submitted
AdrenaAdrenaUser submitted
Bluewater RacingBluewater RacingUser submitted
ImagenationImagenationUser submitted
The GRAPH Ver.3.3The GRAPH Ver.3.3User submitted