What is .GRT file extension?
File created by Grapher 2D and 3D graphing software; saves a graph template, which specifies predefined settings for generating a graph; may include the graph type, axis labels, colors, layout formatting, and other settings.
GRT files enable users to create graphs (.GPJ or .GRF files) that have a consistent look and feel. The graphs are commonly used for presentations and technical publications.
You can see a list of software programs here on easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.