All-In-One Calculator

📌 All-In-One Calculator – Frequently Asked Questions (FAQ)

1. What is All-In-One Calculator?

All-In-One Calculator is a free and versatile multi-calculator and unit converter app for Android. It’s designed to handle everything from basic math to advanced scientific functions, unit conversions, financial calculations, health metrics, and more—all in one place.

2. Is the app really free? Are there any hidden charges?

Yes! The app is completely free to use with no hidden fees. All 75+ calculators and converters, including the scientific calculator, are available at no cost.

3. Who is this app for?

It’s perfect for:

• Students & teachers working on math or science

• Engineers & contractors needing quick calculations

• Anyone who wants help with conversions, budgeting, or daily calculations

4. What makes this calculator different from other calculator apps?

• 75+ built-in calculators & converters

• Scientific calculator with advanced functions

• Offline currency converter with 160 currencies

• Instant results as you type

• Smart search for faster navigation

• Free and ad-free experience
  It’s a complete toolkit, not just a calculator.

5. What types of calculations can I do with this app?

✅ Main Calculator Features:

• Simple & scientific calculations

• Fraction support

• Calculation history

• Memory buttons

• Customizable layout

• Home screen widget

🔣 Algebra:

• Percentages, proportions, ratios

• Averages (arithmetic, geometric, harmonic)

• Equation solver (linear, quadratic, systems)

• Combinations, permutations

• Fraction simplifier & converter

• Prime checker, random number generator

📐 Geometry:

• Area and perimeter of 2D shapes

• Volume and surface area of 3D shapes (cylinder, sphere, cone, etc.)

🔁 Unit Converters:

• Length, weight, volume, temperature, time

• Speed, power, pressure, energy, force

• Cooking, digital storage, torque, acceleration

• Shoe & ring size, Roman numerals, numeric base

💰 Finance Tools:

• Currency converter (160+ currencies, offline support)

• Loan calculator

• Interest calculator (simple & compound)

• Tip & sales tax calculator

• Unit price calculator

🏃 Health Calculators:

• BMI (Body Mass Index)

• Body fat percentage

• Daily calorie burn

📅 Date & Time Tools:

• Age calculator

• Add/subtract dates

• Time interval calculator

🧪 Miscellaneous:

• Mileage calculator

• Ohm’s Law calculator (V, I, R, P)

6. Can I convert currencies offline?

Yes! The app supports 160 currencies and allows you to use the currency converter even when offline. Just make sure you update the exchange rates when online.

7. Does it support scientific calculations?

Absolutely. The app includes a full scientific calculator with advanced functions like trigonometry, logarithms, exponents, and fractions.

8. Is there a widget available?

Yes. The app includes a home screen widget for quick access to calculations without opening the app.

9. Is the app easy to use?

Yes! It features a clear design, large buttons, and an intuitive interface. It’s designed to be simple enough for beginners and powerful enough for pros.

10. Where was the app developed?

All-In-One Calculator was proudly developed in Transylvania 🇷🇴.

If you have more questions or need support, check the app’s help section or contact the developer through the Play Store.