18 financial calculators (SIP, EMI, FD, Rent vs Buy, Investment Compare, BMI, Age) in 8 currencies (USD, EUR, GBP, INR, CAD, AUD, JPY, SGD). Unlike other calculator sites that track and sell your data, CalcIQ performs all calculations locally in your browser. Your financial information never leaves your device. No registration, no cookies, no tracking. Works offline as a PWA. Mobile-first design optimized for 75%+ mobile users. 100% free forever. Privacy-first approach without compromise.