GST Calculator Online – Free & Accurate Tool
Our GST Calculator helps you calculate Goods and Services Tax (GST) quickly and accurately. Whether you want to add GST to a price or remove GST from an amount, this free online GST calculator gives instant results for all GST slabs in India.
This tool is useful for business owners, shopkeepers, freelancers, accountants, students, and anyone who wants to understand GST calculations without manual formulas.
What is GST
GST (Goods and Services Tax) is a single indirect tax applied across India on the supply of goods and services. It replaced multiple indirect taxes like VAT, Service Tax, and Excise Duty.
India follows four main GST rates:
5% GST
12% GST
18% GST
28% GST
How to Use GST Calculator
Using our GST calculator is very simple:
Enter the original amount
Select GST rate (5%, 12%, 18%, or 28%)
Choose:
Add GST (Exclusive GST)
Remove GST (Inclusive GST)
Click Calculate
Get instant GST amount and final price
No login, no signup – 100% free.