GST Calculator

Add or remove GST. Shows CGST, SGST and total amount.

Amount entered is exclusive of GST (base amount).

Enter an amount to calculate GST

How to use the GST Calculator

Simple, free and instant — no sign-up required.

1

Enter your values

Type your numbers or pick dates in the input fields — everything is clearly labeled.

2

Get instant results

Results update in real time as you type. No button to click, no waiting.

3

Copy the result

Click any result to copy it, or share the link to send your calculation to someone else.

4

Use it any time, free

No sign-up, no login, no limits. Come back whenever you need a quick calculation.

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Frequently asked questions

Everything you need to know about GST Calculator.

Yes — GST Calculator is 100% free with no ads, no account, and no usage limits. Open it and calculate instantly.
All calculations use standard mathematical formulas and are accurate to industry-standard precision. The results are for reference; consult a professional for financial or medical decisions.
Absolutely. The calculator is fully responsive and works great on phones, tablets, and desktops.
Yes. All calculations happen in your browser — nothing you enter is ever sent to a server or stored anywhere.

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