About All In One Calculator

All-In-One Calculator combines a clean scientific calculator with 50+ calculators and unit converters for everyday use. Get more from your calculator — for FREE! 🏆 Trusted by over 10 MILLION users worldwide! Scientific calculator • Trigonometry, logarithms, exponents • Graphing calculator: plot functions • Complex number support (√-1 → i) • Fraction results (0.3333 → 1/3) • Memory buttons: MC, M+, M-, MR • Calculator history with notes Currency converter • 160+ currencies, live exchange rates • Convert multiple currencies at once • Works 100% offline Unit converter • Length, weight, volume, temperature • Area, speed, pressure, power, energy • Digital storage, cooking, shoe size • Regional, historic & scientific units • Combined units (ft + in, L + mL) Math calculators • Percentage calculator & discount • Average & proportion calculator • Equation solver: linear, quadratic, etc. • Area & volume of shapes and bodies • Step-by-step solutions Finance calculators • Tip calculator & sales tax calculator • Loan & interest calculator • Unit price comparison Date & health • Age calculator & date calculator • Time between two dates • BMI, body fat & calorie calculator Extra features • Cloud sync across your devices • Calculator widget for your home screen • Simple, classic & modern layouts • AMOLED dark theme to save battery 👋 A note from the developer Hi, I'm Andrei, the developer behind this app. My goal since 2016 has been to create the most comprehensive, clean and easy-to-use calculator on the market, continuously improving it based on your feedback. Try it out and let me know what you think!