GST Calculator
Add GST, remove GST, and instantly see CGST, SGST, and IGST with Indian number formatting.
Real-time add and remove GST
Tip: Values use Indian numbering format like ₹1,00,000.
1. Enter the amount.
2. Pick a GST rate.
3. Use Add GST or Remove GST, or just type and see results instantly.
Add GST: GST Amount = Amount × Rate / 100
Remove GST: GST Amount = Amount × Rate / (100 + Rate)
CGST: GST ÷ 2, SGST: GST ÷ 2, IGST: GST Amount
How do I calculate GST?
Enter the amount, choose the GST rate, and use Add GST or Remove GST to get the breakdown instantly.
Does it show CGST and SGST?
Yes, the result box shows CGST, SGST, and IGST automatically.
Can I copy the result?
Yes, use the Copy button to copy the full calculation summary.
Can I share the result?
Yes, the Share button uses your browser's sharing options when available.
Is this GST calculator free?
Yes, the calculator is free to use for everyone.
Does it work on mobile?
Yes, spacing and buttons are optimized for mobile screens.