Quickly calculate GST amount and total for GST-exclusive or inclusive prices at 5%, 12%, 18%, 28% or custom rates.
Calculate GST Instantly — Inclusive & Exclusive Made Simple
GST calculations can get confusing fast — especially when you’re not sure whether a price already includes GST or not. That’s exactly why this Free GST Calculator exists.
With this tool, you can calculate GST both inclusive and exclusive in seconds. No formulas to remember. No manual math. Just enter the amount, select the GST type, choose the rate, and get accurate results instantly.
It works for everyday buyers, business owners, freelancers, and students — basically anyone who deals with GST numbers and wants clarity
GST stands for Goods and Services Tax. It’s a single indirect tax applied to most goods and services in India.
Instead of multiple taxes, GST simplifies pricing by applying one tax rate at the point of sale. The tax is collected and passed on to the government, while businesses claim credits where applicable.
The most common GST slab rates in India are:
This GST Calculator supports all standard GST rates used in real-world billing.
This is where most confusion happens.
GST is added on top of the base price.
Example:
GST exclusive pricing is commonly used in invoices, quotations, and B2B transactions.
GST is already included in the final price.
Example:
GST inclusive pricing is common in retail pricing and consumer-facing products.
This Free GST Calculator handles both automatically — no guessing needed.
The tool is designed to be straightforward, even if you’re using it for the first time.
Step 1: Enter the Amount
Add either the base price or the final price, depending on your calculation type.
Step 2: Choose GST Type
Select:
Step 3: Select GST Rate
Choose from common GST slabs:
5%, 12%, 18%, 28% or custom.
Step 4: View Results Instantly
The calculator shows:
All results update instantly.
This calculator focuses on accuracy, simplicity, and everyday usability.
Supports Inclusive & Exclusive GST
Switch between GST types without changing tools.
All Standard GST Slab Rates
Covers all commonly used GST percentages in India.
Instant & Accurate Calculations
No delays, no rounding confusion.
Free to Use
No sign-ups. No usage limits.
Works on All Devices
Use it on mobile, tablet, or desktop.
Secure & Browser-Based
All calculations happen on your device. No data is stored or shared.
If you’re curious how the math works behind the scenes, here’s a simple explanation.
GST Exclusive Formula
GST Inclusive Formula
The calculator applies these formulas automatically so you don’t have to.
People use this tool for many real-world scenarios:
If GST is involved, this calculator saves time.
This calculator helps avoid all of these.
GST doesn’t have to feel complicated.
With this Free GST Calculator, you can:
Simple input. Clear results. No friction.
You can also try our other free tools designed to make everyday tasks easier
Enter the final price, choose inclusive, select the GST rate, and the calculator breaks it down instantly.
Use the inclusive option and the correct GST rate to get the base price.
Yes. It’s completely free with no limits.
Yes, it supports all standard GST rates in India.
Yes. All calculations happen locally on your device.