About the GST Calculator

The GST Calculator is a free online tool that lets you add or remove GST — helping you plan loans, savings and investments with instant, accurate numbers. Everything runs locally in your browser, so it is fast, completely private, and works even when you are offline.

Whether you are planning a loan, SIP or budget, the GST Calculator gives you instant results with no installation, no account and no limits.

How to use the GST Calculator

  1. Enter your values into the input fields.
  2. Click Calculate (results also update as you type).
  3. Read the breakdown shown below the form.

Frequently asked questions

Is the GST Calculator free to use?

Yes. The GST Calculator is completely free with no sign-up, no usage limits and no watermarks. Use it as many times as you like.

Is my data safe and private?

Absolutely. The GST Calculator processes everything inside your browser — your input is never uploaded to any server, so your data stays 100% private.

Which currency does this calculator use?

Amounts are shown with the ₹ symbol and Indian number formatting (lakh/crore), but the maths works for any currency — just read the figures in your own.

Do I need to install anything or use it on mobile?

No installation needed. The GST Calculator works in any modern browser on desktop, tablet and mobile.

Can it both add and remove GST?

Yes. Choose "Add GST" to find the tax on a base price, or "Remove GST" to extract the base price and tax from a GST-inclusive amount.

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