GST Calculator

Add or remove GST and see the CGST and SGST split.

Loading tool…
  • 🔒 Files never leave your device
  • ⚡ Converted in your browser
  • ✅ No account required

GST Calculator: The Complete Guide

Calculate GST and its CGST/SGST split instantly. Enter the amount and GST rate, then choose to add or remove GST to see the net price, the GST amount split into CGST and SGST, and the gross.

Who the GST Calculator is for

Indian businesses and shoppers computing GST-inclusive and exclusive prices and the CGST/SGST breakdown.

How to use the GST Calculator

  1. Type your values into the fields above — pick your currency or units where the calculator offers them.
  2. Results update automatically as you type; there's no submit button and nothing is sent to a server.
  3. Adjust any input to compare scenarios, then copy the result with a single click.

How it works

To add GST: GST = net × rate ÷ 100, gross = net + GST. To remove GST: net = gross ÷ (1 + rate ÷ 100). For intra-state supply, GST splits equally into CGST and SGST (half each).

Features

  • Add or remove GST
  • CGST & SGST split
  • Net and gross
  • Any GST slab & currency

About GST and CGST/SGST

Goods and Services Tax (GST) is a unified consumption tax. On intra-state sales it's split equally into Central GST (CGST) and State GST (SGST); on inter-state sales it's charged as a single IGST. This calculator handles the common intra-state split and works for every GST slab.

Frequently Asked Questions

What's the CGST/SGST split?

For sales within a state, GST is divided equally between the central and state governments — so an 18% GST is 9% CGST plus 9% SGST.

Does it handle IGST?

For inter-state supply the full rate is IGST. The total GST shown equals the IGST amount; the CGST/SGST rows apply to intra-state sales.

Is this calculator free and private?

Yes. It's completely free with no signup, and every calculation runs locally in your browser, so your numbers never leave your device.

You Might Also Need