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Calculator solve any mathematics problem easily.

The original All-In-One Calculator for Android.

It's a FREE, complete and easy to use multi calculator & converter.

One Calculator is suitable for solving easy common calculus and more complex mathematical calculations.

Designed with simplicity in mind, it helps you solve everyday problems.
From simple or complex calculations, to unit and currency conversions, percentages, proportions, areas, volumes, etc... it does it all. And it does it good!

Simply the the best free scientific calculator on the market.

Calculator has many facilities, such as:
- basic arithmetic operations including percentage, modulo, etc.
- fractions (in the expression mode any expression including nested fractions can be entered as a numerator and a denominator).
- mixed numbers.
- Pi
- periodic numbers and their conversion to fractions.
- operator priority.
- common unit conversions
- conversion between rectangular and polar coordinates
- advanced number operations such as random numbers, combinations, permutations, common greatest divisor, etc.
- trigonometric and hyperbolic functions.
- powers, roots, logarithms, etc.
- Mean, Sum, # Elements
- Standard Deviation
- Log, Ln, Inverse Log, Exponential
- nPr, cPr, x!
- Random Number Generator
- degrees, minutes and seconds conversion.
- fixed point, scientific and engineering display format.
- Three different modes: Float, Fixed and Scientific
- display exponent as SI units prefix.
- memory operations with 10 extended memories.
- clipboard operations with various clipboard formats.
- result history.
- logical operations.
- bitwise shifts and rotations.
- Reverse Polish notation.
- can perform multiple complex calculation in single step
- works offline, no internet connection required
- binary, octal, and hexadecimal (can be enabled in Settings)
- Very high internal precision. For calculations like: cubeRoot(17)*cubeRoot(17)*cubeRoot(17) = 17
-Switch between the scientific calculator layout and the simple layout by rotating your device.


Calculator, Scientific calc

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