Free online India GST calculator - CGST/SGST/IGST, inclusive/exclusive price conversion
CGST (Central GST) is collected by the central government, SGST (State GST) by the state government. Both apply to intra-state transactions, each at half the GST rate. IGST (Integrated GST) applies to inter-state transactions at the full rate, collected by the central government. For 18% GST: intra-state = 9% CGST + 9% SGST, inter-state = 18% IGST.
Exclusive → Inclusive: Inclusive = Exclusive × (1 + GST Rate/100). Inclusive → Exclusive: Exclusive = Inclusive / (1 + GST Rate/100). GST Amount = Inclusive - Exclusive.
India has 5 main GST rate slabs: 0% (essentials), 5% (essential goods and services), 12% (standard rate), 18% (most goods and services), 28% (luxury and sin goods). Special rates: 0.25% (gemstones) and 3% (gold).
Yes. GST Calculator is fully responsive and works on phones, tablets, and desktops. The interface adapts automatically to your screen size.
Yes, GST Calculator is completely free to use. No registration or login required — all features are available immediately.
No. GST Calculator uses client-side processing — everything runs in your browser. Your data never leaves your device, and the tool works even without an internet connection.
No. GST Calculator is a web-based tool — just open it in your browser and start using it. No downloads, plugins, or extensions required.
Absolutely. All processing happens locally in your browser. No data is sent to any server, so there's zero risk of data leaks. Your information stays completely under your control.
GST Calculator has no usage limits — it's free and unlimited. Since processing is done client-side, speed depends on your device. For very large files, we recommend processing in batches for the best experience.