Free GST Tools
Everyday GST utilities for Indian businesses — free, instant, and no signup required. Built by the team behind Invodo.
GST Calculator
Add or remove GST at any slab and see the CGST/SGST split instantly.
Open tool →Free Invoice Generator
Fill in your details and download a GST-compliant invoice PDF in seconds.
Open tool →HSN / SAC Code Finder
Search HSN and SAC codes by product, service, or code number — with GST rates.
Open tool →GSTIN Validator
Verify any GST number's format and checksum, and decode its state and PAN.
Open tool →Why we built these tools
GST compliance is full of small, repetitive lookups — what's the GST on this amount, which HSN code fits this product, is this customer's GSTIN real? These free tools answer those questions instantly, with the same calculation logic Invodo uses on real invoices. For step-by-step guides on GST filing, e-invoicing, and e-way bills, visit our blog.
Ready to automate the whole flow?
Invodo handles GST invoicing, e-invoicing, e-way bills, and purchase orders end to end. Start free.