This tool is a free calculator to easily calculate your semester gpa and cumulative gpa. To use, you simply need to enter in your current gpa and credits, as well as your current semester classes with gpa and credits. You can also select which grading system your classes use. Currently, I added the two most common ones which is the US 4.0 grading system and the Indian 10.0 grading system, however I plan to add more.

I am working on improvements so any feedback would be greatly appreciated.