Free GST Calculator Online | WhyTomic

CALCULATOR TOOLS • CLIENT-SIDE

Free GST Calculator

100% Free Online No Signup Auto Category Rates Securely Process Offline

Base Amount (₹)

Calculation Type

Add GST (Exclusive) Remove GST (Inclusive)

Auto-Find Rate by Category Custom (Select Rate Manually) Gold, Diamonds & Jewellery (3%) Apparel < ₹1000, Footwear < ₹500, Sugar (5%) Apparel > ₹1000, Computers, Processed Food (12%) Mobiles, Electronics, Services, Banking (18%) Luxury Cars, ACs, Cement, Tobacco (28%)

GST Rate (%) 0% (Nil Rated) 0.25% (Rough Diamonds) 3% 5% 12% 18% 28%

Bulk GST Calculation

Upload your CSV ledger to calculate GST in bulk securely offline.

Processing Calculation...

Crunching the numbers client-side for maximum security.

Calculation Success!

Net Base Amount ₹0.00

Total GST Amount ₹0.00

↳ CGST (Half) ₹0.00

↳ SGST / UTGST (Half) ₹0.00

Total Inclusive Amount ₹0.00

Frequently Asked Questions

What is the fastest way to calculate GST inclusive and exclusive amounts online?

Our free client-side tool is the fastest way to calculate GST. Simply input your base amount, select whether the tax is inclusive or exclusive, and the system auto-computes the CGST, SGST, and total net amount instantly without any page reloads or delays.

How to auto find GST rates as per item category?

We have built-in category detection to save your time. Use the "Auto-Find Rate by Category" dropdown to select your sector (like Electronics, Apparel, Luxury Goods, or Jewellery), and the correct standard slab rate (3%, 5%, 12%, 18%, or 28%) will be automatically applied to your calculation.

Is this GST Calculator tool safe to securely process offline?

Yes, absolutely! This tool is built entirely on modern client-side architecture. This means all financial numbers you input to calculate GST are securely processed offline directly within your browser window. No financial data, amounts, or CSV files are ever uploaded or stored on our servers.