Free Tools

Free tools for Indian retail businesses

Handy calculators and generators built for GST billing in India — free to use, no sign-up, and they run right in your browser.

Which tool do you need?

Making a bill for a customer? The invoice generator builds a complete GST tax invoice — party details, HSN codes, CGST/SGST or IGST split and the amount in words — that you can download as a PDF. If the customer only wants a price first, start with the quotation generator and convert the numbers into an invoice once they say yes.

Checking the tax itself? The GST calculator adds or removes GST at any slab and shows the CGST/SGST/IGST split instantly, and the HSN code finder tells you which code — and which rate — applies to what you sell, updated for the post-2025 slab structure.

Labelling stock? The barcode generator turns any item code into a printable Code 128, EAN or UPC label sheet, so unbranded and in-house items can be scanned at the counter like everything else.

Working out whether the business itself adds up? The margin & markup calculator settles the percentage every supplier quotes differently, the discount calculator shows what an offer really costs you once GST lands on the post-discount value, the business loan EMI calculator tells you what a loan takes out of every month, and the break-even calculator turns your rent and salaries into a units-per-month target. Every tool is free, needs no sign-up, and runs entirely in your browser — nothing you type is sent to a server.

Do it all in one app

Love the calculator? RetailDek turns GST maths into finished invoices — with stock, purchases and reports built in. Start free with your own data.

Coming soonExplore features
Free Tools

Free GST, billing & inventory tools

No sign-up, no login — they run entirely in your browser.

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