The calculator that speaks in lakhs and crores.
Big Casio-style keys, Indian number grouping, GST and currency conversion — free, no ads, works offline.
Everything a desk calculator does, and more.
Reads numbers the Indian way
Amounts group as 1,23,45,678 with a plain-words line underneath — "₹1.23 crore" — so long numbers are never a squint.
Currency conversion
One tap between INR, USD, GBP and EUR, with rates that refresh daily.
GST in one press
GST+ adds tax, GST− strips it from an inclusive price. The rate is yours to change.
A paper tape that never runs out
Every calculation is kept in History. Tap any old line to carry on from that number, or copy the whole tape as text.
Behaves like a real Casio
A 00 key, a proper % key (200 + 10% gives 220 straight away), and 2 + 3 × 4 correctly makes 14.
Undo any slip
Undo steps back through anything — even conversions and pastes.
Put it on your home screen.
Installs like an app
Open the calculator, then use your browser's Add to Home Screen (Share button on iPhone, menu on Android). It keeps working with no internet at all.
Private by design
No account, no ads, no tracking. Your history stays on your device.