India GST Calculator — free online tool

You quote a price and then have to figure out the GST on top of it. Or a bill already includes tax and you need to know the part before GST. Doing that math by hand, again and again, gets old fast. We added a free tool that does it — India GST Calculator — right in your browser.

What it does

You type a price in rupees and pick the GST rate. It works with the 18% standard rate and the 5%, 12% and 28% slabs. It can add GST on top of a price, or remove GST from a price that already includes it, so you see both the base amount and the tax.

Nothing leaves your device

The whole thing runs in your browser. The numbers you enter are never uploaded and never saved anywhere. When you close the page, nothing stays behind.

How to use it

  1. Open the India GST Calculator and type the price in ₹.
  2. Choose the GST rate (18%, 5%, 12% or 28%) and pick add or remove.
  3. Read the result — the base price and the GST amount.

It's free with no limit. There are more small tools on the Apps page.

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