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EMI, GST, SIP, Age, BMI, Unit & Currency converter — 18 calculators, offline
All-in-One Calculator puts 18 everyday calculators and converters in one small, fast app — and every tool works 100% offline. FINANCE • EMI Calculator — loan EMI, total interest and payment schedule • GST Calculator — add or remove GST (5%, 12%, 18%, 28% or custom) • SIP Calculator — see how monthly investing grows over the years • FD & RD Calculator — fixed and recurring deposit maturity • Simple & Compound Interest • Discount Calculator — price after discount, with extra-discount stacking • Percentage Calculator EVERYDAY TOOLS • Scientific Calculator with history • Age Calculator — exact age in years, months, days + next-birthday countdown • Date Difference Calculator • Number to Words — Indian (lakh, crore) and international format • Fuel Cost Calculator — plan trip fuel spend HEALTH • BMI Calculator with category • Calorie (BMR) Calculator CONVERTERS • Unit Converter — length, weight, temperature, area, volume, speed, data • Currency Converter — offline with stored rates • Land / Area Converter — acre, hectare, sq ft, sq m, gunta, bigha WHY THIS APP? ✓ Works fully offline — no internet needed for any calculation ✓ Indian number format (1,00,000) and ₹-friendly ✓ Copy or share any result in one tap ✓ History of your last 50 calculations ✓ Mark favourite tools for quick access ✓ Light and dark theme ✓ Small download, fast and simple One app instead of ten. Install All-in-One Calculator and keep every calculation in your pocket.