GST Calculator Online Free
Calculate GST instantly for India — add GST to a base amount or reverse GST from a total, with automatic CGST, SGST, and IGST breakdown. Free, secure and processed entirely in your browser.
Enter an amount to see the GST breakdown
Your total updates instantly as you type
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How to Calculate GST Online
Calculate or reverse-calculate GST in seconds. Everything happens securely inside your browser.
Enter Your Amount
Type in the amount you want to calculate GST on — a product price, invoice value, or settlement amount.
Choose GST Rate
Pick a standard slab — 5%, 12%, 18%, 28% — or enter any custom GST rate.
Add or Reverse GST
Select Add GST to calculate GST on a base price, or Remove GST to reverse-calculate the base amount from a GST-inclusive total.
Get Your Breakdown
See the base amount, GST amount, CGST/SGST or IGST split, and final total instantly — no waiting, no server upload.
Everything You Need in a GST Calculator
Our free GST calculator helps sellers, businesses, and accountants work out GST instantly — add GST to a price or reverse-calculate it from a GST-inclusive total, with a full CGST, SGST, and IGST breakdown.
GST Calculator Online Free
Calculate GST online without paying for software or creating an account — completely free, every time.
Works as a Reverse GST Calculator
Switch to Remove GST mode to instantly reverse-calculate the base price from any GST-inclusive total.
CGST, SGST & IGST Breakdown
Automatically splits GST into CGST and SGST for intra-state sales, or shows IGST for inter-state sales.
All GST Slabs Supported
Covers standard 0.25%, 3%, 5%, 12%, 18% and 28% GST rates, plus any custom rate you need.
Instant Calculation
Results update live as you type — no button to click, no page reload, no waiting.
Private & Secure
All calculations happen locally in your browser. Your amounts are never uploaded or stored anywhere.
Who Is This GST Calculator For?
Built for anyone who needs to quickly calculate GST-inclusive or GST-exclusive pricing.
Meesho Sellers
Flipkart Sellers
Amazon Sellers
Small Businesses
Freelancers & Consultants
Accountants
Frequently Asked Questions
What is a GST calculator?
A GST calculator works out how much GST applies to an amount — either by adding GST to a base price or by reverse-calculating the base price from a total that already includes GST.
How do I calculate GST online?
Enter your amount, select a GST rate (5%, 12%, 18%, 28%, or a custom rate), choose Add or Remove GST, and the calculator instantly shows the base amount, GST amount, and total.
Is this GST calculator suitable for India?
Yes. This GST calculator is built for India's GST system, with support for CGST, SGST, and IGST based on standard Indian GST slabs.
What is a reverse GST calculator?
A reverse GST calculator takes a total amount that already includes GST and works backward to show you the original base price and the GST portion. Use the Remove GST mode for this.
How do I reverse calculate GST from a total amount?
Select Remove GST mode, enter the GST-inclusive total, and the calculator shows you the base amount and the GST amount that was included.
Is this GST calculator free?
Yes. This GST calculator is completely free to use online with no signup, subscription, or hidden charges.
What is the difference between CGST, SGST, and IGST?
CGST and SGST apply together for intra-state sales, splitting GST equally between central and state government. IGST applies for inter-state sales, with the full GST amount going to the central government.
Does this GST calculator support custom GST rates?
Yes. Along with the standard 0.25%, 3%, 5%, 12%, 18%, and 28% slabs, you can enter any custom GST rate.
Can Meesho, Flipkart, or Amazon sellers use this GST calculator?
Yes. Online sellers commonly use this tool to work out GST on product pricing, invoices, and marketplace settlements before listing or dispatching orders.
Is my data safe when using this GST calculator?
Yes. All calculations happen instantly in your browser. No amounts or data are sent to or stored on any server.
Can I use this GST calculator on mobile?
Yes. It works on Android phones, iPhones, tablets, Windows PCs, and Mac computers.
Do I need to create an account to use this GST calculator?
No. There's no signup or login required — just enter your amount and get results instantly.
What GST rates does this calculator support?
The calculator supports all standard Indian GST slabs — 0.25%, 3%, 5%, 12%, 18%, and 28% — along with any custom rate you enter.
Why use CropLabel's GST calculator?
CropLabel offers a fast, accurate, and free GST calculator that works both ways — adding GST to a price or reverse-calculating GST from a total — with instant CGST, SGST, and IGST breakdowns.