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The calculator that’s actually fun

Every sum gets a little celebration. Indian commas, one-tap GST, monthly ↔ yearly, and a history tape you can tap to reuse.

Works with your keyboard too: numbers, + − * /, Enter, Backspace, Esc.

Money shortcuts

GST rate

Type an amount, then tap a shortcut. “− GST” pulls the tax out of a price that already includes it.

History

Your sums show up here. Tap one to use its answer again. Nothing is saved or sent anywhere.

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Built for rupees

Numbers use Indian grouping, so 12,00,000 reads as 12 lakh at a glance, and anything over a thousand is also spelled out in lakhs and crores under the answer.

GST in one tap

Pick the rate (5%, 12%, 18% or 28%), type a price, and tap + GST to add tax or − GST to find the price before tax. Both steps land in the history tape so you can see exactly what happened.

Monthly to yearly, and back

Subscriptions, rent and EMIs are easier to judge as a yearly number. Type a monthly amount and tap × 12; for a yearly bill like insurance, tap ÷ 12 to see what it costs each month.

Questions

Does it follow BODMAS?

Yes. Multiplication and division happen before addition and subtraction, so 100 + 20 × 3 is 160, not 360.

How does the % key work?

Like a phone calculator. 500 + 10% adds 10% of 500 (550). 500 × 10% gives 10% of 500 (50). On its own, 25% becomes 0.25.

What is the difference between + GST and − GST?

+ GST adds tax on top of a price: ₹1,000 + 18% is ₹1,180. − GST works backwards from a price that already includes tax: ₹1,180 including 18% GST is ₹1,000 before tax, so the GST inside was ₹180.

Can I use my keyboard?

Yes. Type numbers and + − * /, press Enter for equals, Backspace to delete a digit and Esc to clear. On a phone, just tap.

Is anything I type saved?

No. Everything runs in your browser. The history tape disappears when you close or refresh the page.

Estimates for planning only — not tax, legal or investment advice. Rates and rules change; confirm with your bank, fund house or a chartered accountant before acting.