This All-In-One Calculator combines a clean scientific calculator with 50+ calculators and unit converters for everyday use. Replace your stock calculator with the one that does (almost) everything — 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! I've been building this calculator since 2016. Shaped by years of user feedback, this app is supported by minimal ads that can be removed forever for the price of 2–3 coffees. You can reach me from the About section in the app.

Try it out and let me know your thoughts!