GST Calculator

Amount

GST rate

Mode

📖 Introduction

The GST Calculator lets you quickly add GST to a base price or remove GST from an inclusive price. Choose the GST rate and the mode to see the GST amount and final total.

📐 Formula

Add GST: GST = Amount × Rate ÷ 100; Total = Amount + GST. Remove GST: Base = Total ÷ (1 + Rate ÷ 100); GST = Total − Base.

🔢 Example

For 1,000 at 18% (exclusive): GST = 180, total = 1,180. For 1,180 inclusive at 18%: base = 1,000, GST = 180.

❓ FAQ

Can it remove GST from an inclusive price?

Yes, choose “Remove GST” and it will compute the base price and the GST contained in the total.

Which GST slabs are supported?

5%, 12%, 18% and 28% — the common Indian GST rates.