All-In-One Calculator

All-In-One Calculator for Android combines a full scientific calculator with a large library of calculators and converters. You can handle quick arithmetic, complex formulas, unit conversions, currency exchanges, percentages, areas, volumes, and more in a single app. The interface stays simple and practical, so you can solve real-life math tasks without jumping between multiple tools. The app is completely free and aims to give everyone access to a powerful calculator suite.

Main Calculator: Fast, Clear, and Flexible

The main calculator uses a clean layout with large buttons and multiple display styles. You can edit your input with a movable cursor, copy and paste values, and use scientific functions when you need them. The app also supports fractions, offers a calculation history for review, includes memory buttons for repeated values, and provides a home screen widget for quick access.

75+ Calculators and Converters in One Place

All-In-One Calculator includes more than 75 free calculators and unit converters, organized for easy navigation. You get instant results as you type, and a smart search feature helps you find the right tool quickly. The app covers Algebra, Geometry, Unit Conversions, Finance, Health, and Date & Time tasks, which makes it useful for school, work, and daily planning.

Algebra Tools: Percentages, Ratios, Equations, and More

You can calculate percentages, proportions, ratios, and averages (arithmetic, geometric, and harmonic). The app also helps you solve linear and quadratic equations, work with systems of equations, and compute GCF and LCM. It includes combinatorics tools (combinations and permutations), decimal-to-fraction conversion, fraction simplification, prime checking, and a random number generator.

Geometry: Shape and Solid Calculations

The geometry section covers common 2D shapes such as squares, rectangles, triangles, circles, ellipses, and polygons. It also supports 3D bodies like cubes, prisms, pyramids, cylinders, cones, spheres, and related variations, so you can calculate measurements like area and volume accurately.

Unit and Currency Conversions (Offline Currency Included)

The app supports a wide range of unit converters including length, weight, temperature, pressure, speed, power, energy, torque, time, storage, data transfer speed, numeric bases, Roman numerals, and cooking units. It also includes a currency converter with around 160 currencies available offline, which helps when you travel or work without reliable internet access.

Finance, Health, and Date/Time Calculators

You can run everyday finance calculations such as unit price, sales tax, tips, loans, and simple or compound interest. For health, the app includes BMI, daily calorie burn estimates, and body fat percentage tools. For scheduling and planning, you can calculate age, add or subtract time from a date, and find intervals between two dates.

Who Benefits Most from This App

Students, teachers, engineers, contractors, and anyone who frequently converts units or checks numbers can use this app as an all-purpose solution. It replaces multiple single-purpose calculator apps by keeping common tools in one organized, easy-to-use workspace.