GST Calculator is designed to calculate the inclusive of sales tax, exclusive of sales tax and the tax value for a given amount while allowing you to specify the tax percentage you want to use.
This allows you to customise the values for any country or situation.

There is inbuilt GST Calculator for India where you can calculate major GST values like 5%, 12%, 18%, 28% with just one click. Meanwhile you get values of CGST, SGST on just single click. GST Calculator also gives you values of -GST like -5%, -12%, -18%, -28% by which you can make GST bills easily and create GST invoice with net price of the product. -GST is used to get base price of any product excluding GST.