Free tools

Small tools for the sums a shop does every day.

No sign-up, no app to install. Each one works things out exactly the way BillCountr does on a real bill.

What you need to know

What these tools are for.

4 topics

01 · GST calculator

Check a GST sum before you bill it

Type a price, pick a rate, and say whether the price already includes GST. The calculator shows the taxable value, the tax, and how that tax splits: CGST and SGST for a buyer in your own state, IGST for one in another. It works in paise and rounds once at the end, the same way a BillCountr bill does, so the figure you check here is the figure that prints.

Add GST to a price, or take it out
CGST + SGST, or IGST
Only the slabs in force today
Worked examples for each case

Open the GST calculator

02 · HSN codes

Find the code for what you sell

A GST invoice to a registered buyer needs an HSN code on each line. The finder searches 192 everyday codes by the words shopkeepers use for the goods, not only the legal description, and lists them for 9 trades, from kirana to auto parts. Each list also says how many digits your bill needs for your turnover. It is a starting point: for anything unusual, the page links to the official search on the GST portal.

192 codes, searchable
A list for each of 9 trades
4 or 6 digits: which your bill needs
Links to the official GST search

Find an HSN code

03 · Glossary

The words on a GST bill, explained

11 terms that come up behind a counter and on GST paperwork, each with its Hindi name, what it means for a shop, what BillCountr does about it, and the official rule it comes from. Read it when a supplier, a customer or your accountant uses a word you want to be sure of.

Hindi name alongside each term
What it means for your shop
Linked to the official source

Read the glossary

04 · Why

Built from the same rules as the app

The GST calculator uses the same arithmetic as BillCountr's bills, to the paisa, and the HSN finder uses the same code list the app suggests from. If you check a sum here and then bill it, the two agree.

Same rounding as a printed bill
Only today's GST rates
The codes the app suggests
Free, with nothing to sign up for

GST calculatorAdd GST to a price or take it out, with CGST and SGST or IGST.HSN code finderThe code for what you sell, searchable by the words you use.GST and shop glossaryTax invoice, bill of supply, GSTIN, e-way bill and more, in plain words.

Common questions

Questions about the free tools.

Are these tools really free?

Yes. There is no sign-up and no limit on how often you use them. They run in your browser, and nothing you type into them is saved.

Can I trust the GST calculator for a real bill?

It uses the same calculation as BillCountr's bills, so for one amount at one rate it gives the figure a bill would print. It does not decide which rate applies to a product; that depends on the exact goods, and the HSN code is where to start.

Is the HSN list complete?

No. It covers the everyday goods each trade sells, in the words used at a counter. The GST portal's HSN and SAC search covers every code, and the HSN page links to it.

See the HSN code lists

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