Simple app with the same functionality as a classical desk calculator. Ideal for everyday, office, or school.

Android's #1 Scientific Calculator. A fully featured scientific calculator which looks and operates like the real thing.

Looking for fractions? Degrees/minutes/seconds? Landscape mode? You need RealCalc Plus. See elsewhere on this page for the link, or select 'Upgrade' from the RealCalc menu.

RealCalc includes the following features:
* Traditional algebraic or RPN operation
* Unit conversions
* Physical constants table
* Percentages
* Result history
* 10 memories
* Binary, octal, and hexadecimal (can be enabled in Settings)
* Trig functions in degrees, radians or grads
* Scientific, engineering and fixed-point display modes
* 7-segment, dot-matrix or standard font display
* Configurable digit grouping and decimal point
* Full built-in help
* A complete lack of advertising

RealCalc Plus contains all these features, plus:
* Fraction calculations and conversion to/from decimal
* Degrees/minutes/seconds calculations and conversion
* Landscape mode
* 12-digit display
* Extended internal precision (32-digit)
* User-customizable unit conversions
* User-customizable constants
* New RPN styles (buffered-entry, XYZT rolling stack)

If you find RealCalc useful, please consider purchasing RealCalc Plus to support further development. Thank you.

FAQ:
* If you want data size conversions in multiples of 1024, use kibibytes, mebibytes, gibibytes, etc - see en.wikipedia.org/wiki/Kibibyte.

* If you can't find HEX, BIN or OCT modes, go to Menu > Settings and make sure that 'Radix Modes' is checked.

* If the percent key appears to give wrong answers, make sure you are pressing '=' at the end, e.g. '25 + 10 % =' will give 27.5.

* If sin/cos/tan functions don't give the answer you are expecting, make sure you are in the correct angle mode. Degrees, radians and grads are supported, indicated by DEG, RAD, GRAD in the display. Use the DRG key to change mode.

* If any of the digit keys are disabled, or the decimal point doesn't work, or you have answers with letters in, or basic arithmetic appears to be wrong, then you are in binary, octal or hexadecimal mode. Press DEC to return to decimal operation. If you don't need these modes, please make sure that 'Radix Modes' is disabled in the settings.

Please read the help for more information.

HP48 sx emulator.

This is a modified version of Droid48 but for HP48SX

Credit goes to Arnaud Brochard (author of droid48) and of course Eddie C. Dost - author of x48 - (See https://play.google.com/store/apps/details?id=org.ab.x48)

Source code on https://github.com/czodroid/droid48sx

Skin is not perfect but usable. I loved this calc....

Tested on galaxy s2, nexus4 5 and 7.

CalcAndroid - Scientific calculator.
Looks, works and feels like the old ones.

Features:

* 10 digits display + 2 digit exponent ( range from -9.9e99 to 9.9e99 )
* Typical operations ( add, subtract, multiply, divide ), with virtually infinite brackets
* Power functions ( n-power, n-root, square, square root, cubic root )
* Logarithmic functions ( log10, ln, 10 power, exp )
* Single value memory
* Trigonometric functions ( sin, cos, tan, including inverse and hyperbolic )
* Three angle modes ( deg, rad, gra )
* Random number generator
* PI constant
* Permutation (nPr) and combinatorial number (nCr)

Please tell me your thoughts at www.mamuso.com

A beautiful and efficient emulator to 12C financial calculator.

* RPN;
* PV, FV, PMT, n, i
* Amort

This application has been designed and engineered for easy operation at any level. The natural display and enhanced features makes it versatile and the perfect choice for high school and college students alike.

* Multi-skin
* Copy clipboard
* Percentages
* Memories
* Trig functions in degrees, radians or grads
* Fixed-point display modes
* Configurable digit grouping and decimal point
* Degrees, minutes and seconds.
* Adjustable size digit

Panecal is a scientific calculator application for technical work such as information engineering, mechanical engineering, dynamics, measurements, and construction, an essential item for engineers and science students.
　
Panecal scientific calculator can display and correct mathematical formulas. You can use it to check formulas, which enables you to prevent input errors and calculation mistakes. Panecal has functions such as editing and recalculating calculation formulas entered in the past, as well as the capability to use variable memory to only change specific values and do calculations.
　
A cursor is displayed on the screen, and you can tap the screen or push arrow keys to quickly move to the location you want to edit. Panecal allow you to swipe to scroll through formulas, as well as copying and pasting using long tapping, which makes it a strong and flexible application with an intuitive user interface.
　
[Main functions]
- Move the cursor by tapping and swipe to scroll through the screen
- Copy and paste
- Can select from a history list of formulas calculated in the past, edit them, and recalculate
- Can calculate binary numbers, octal numbers, decimal numbers, hexadecimal numbers up to 32 bits, and do radix conversion
- Can use M+/M- memory functions and 6 types (A-F) of variable memory
- Arithmetic operations, inverse trigonometric functions, logarithmic functions, power functions, power root functions, factorials, absolute values, and percent calculations
- Can select degrees, radians, or grads for angle units
- Can select from FloatPt (floating decimal mode), Fix (fixed decimal mode), Sci (index mode), and Eng (index is in multiples of 3) for displaying values
- Can set types of decimals and grouping separator settings
- Horizontal screen display
- Check key input with vibration and orange coloring

[Disclaimer]
Please note in advance that Appsys is not responsible for any damage or lost profits caused by the use of this software, or any claims from third parties.

It is a very complete scientific calculator, contains most mathematical functions with the ability to perform graphics functions. It includes a library with one hundred (100) formulas of mathematics and physics ready to use, which generates a result after entering the value of its variables, it also allows to easily extend the library with your own formulas or functions, in general is very easy to use like a real calculator, includes a display for writing operations without character limit, allows you to use parentheses and respects the hierarchy of expressions, the result is displayed on the second line of the display with the ability to update or correct any character when there is an error in the expression.

Scientific calculator Features:

• Allows make function graphs
• Library formulas
• Typical operations (add, subtract, multiply, divide)
• Exponential functions and root (Nth power, nth root, squaring, square root, cube root)
• Logarithmic functions (log10, 1n, powers of 10, exp)
• Trigonometric functions (sin, cos, tan, including inverse and hyperbolic)
• Three angle modes (DEG, RAD, GRA)
• Random number generator
• Permutations (nPr) and combinations (nCr)
• Absolute value, factorial
• Allows numbers in scientific notation
• Includes major scientific constants
• Basic Operations and converting number systems (decimal, hexadecimal, octal, binary)
• Set number of decimal and thousands separator
• History of past operations and results
• Allows you to store in memory different results
• Help Manual

The following features are only available in the professional version (Kal pro).

• Expand the library with your own formulas
• Statistical Mode.
• Standard Deviation.
• Arithmetic mean.
• Sum of values.

• It does not include advertising.

TechCalc contains 11 computing modes in one application + a handy reference section.
Modes included are:

* Basic Mode,
* Scientific Mode,
* 64-bit Programmer Mode (Hex, Oct, Bin and Dec),
* Graphing (save copy of graph to sdcard),
* Matrices,
* Complex Numbers (cartesian, polar, using Euler's identity),
* Quick Formulas,
* Quick Converter,
* Time Calculator,
* Equation Solver,
* Calculus (Derivative, Definite Integral, Taylor Series & Indefinite Integral) - requires Android version 2.3 or higher

+ the Periodic Table of Elements!

Features include:

* All Trigonometric operations (radians, degrees or gradients)
* Powers & Roots
* Logs and Antilogs
* Factorial, Modulus & Random Numbers functions
* HCF, LCM, Prime factorization
* Pol() & Rec() Functions
* Permutations (nPr) and Combinations (nCr)
* Statistics
* Fractions Mode
* A wide range of conversion categories and constants
* 20 Memory Registers in each of the calculation modes
* Detailed calculation history
* Extensive Help and Reference
* Highly customizable via the Settings

The reference section includes:

* Physical Laws
* Names in the Metric System
* Mathematical Tables
* Elementary & Linear Algebra
* Trigonometric Identities
* Differentiation & Integration Rules
* Statistics Formulas
* Vector Mathematics
* ASCII, Fractional Bits & Roman Numeral Converters
* pH, Interpolation, Body Mass Index (BMI) & Proportion Calculators
* Sigma & Pi Notation

Please email any questions that are not answered in the Help section.

This is an ad-supported app - upgrade to an ad-free version for USD 0.99 (or the equivalent in local currency) via https://play.google.com/store/apps/details?id=com.roamingsquirrel.android.calculator_plus

Our scientific calculator is provided to you in full and for free. Do you have difficulty in calculating scientific matter you do not worry use scientific calculator application. This complete calculator is helpful for you as a student to find a precise mathematical results. Can have quick access to certain mathematical functions when needed, so that the right choice for you

Scientific Calculator we have features such as:

* The history with this feature you can see the history of the previous results,
* Memory Features
* Traditional algebraic or RPN operation
* Result history * Unit conversions
* Physical constants table
* Percentage
* Binary, octal, and hexadecimal (can be enabled in Settings)
* Trig functions in degrees, radians or graduate
* Scientific, engineering and fixed-point display modes
* Configurable digit grouping and decimal point, and many others in the full scientific calculator

The app is a powerful Android scientific calculator with real look. It is one of the few Android calculators with complex number equations support. Features:
* Real equation view editor with brackets and operator priority support
* Component or polar complex entry/view mode
* Equation and result history
* 7 easy to use memories
* Large universal/physical/mathematical/chemical constant table
* Degrees, radians and grads mode for trigonometric functions
* Fixed, scientific and engineering view mode
* Easy to use with real look
* Advertisement free!
Would you like to have multiline equation editor with equation syntax hightiting, actual bracket highlighting and trigonometric functions of complex argument support? Upgrade to PowerCalc Pro.
* Multiline equation editor
* Equation syntax highliting
* Actual bracket highliting
* Trigonometric functions with complex argument support
Stay tuned! We are preparing new functionalities:
* Unit conversions
* Radix modes
* Help

USA TODAY named Calculator Plus among its "25 Essential Apps", calling it the "handy calculator app that's garnered great user ratings"

I'm Calculator Plus - the perfect calculator for Android. I'm easy to use and beautifully designed to do things better than your phone or handheld calculator ever did.

I love saving you time and effort. I remember everything you calculate, and let you review it anytime, making me perfect for shopping, doing homework, balancing checkbooks, or even calculating taxes. And if you quit the calculator and go do something else, it's all still here when you come back. You'll never need to type the same calculation twice again.

I'm attractive and effective and I make great use of your big, beautiful display:

- You'll never forget where you are in a calculation - I show you exactly what's happening at all times
- I remember everything, so you can take a break, then come back later and pick up where you left off
- I show your calculations in clear, elegant type that's easy to read, with commas just where they should be
- You can use backspace anytime to correct a simple mistake, instead of starting over
- Use memory to keep a running total you can actually see
- My percentage key shows exactly what it did, so you're not left confused
- Swipe memory keys aside for advanced math functions!
- NEW! Full support for Samsung Multi-Window - true multitasking for your Galaxy device.
- My intuitive, lovable design makes it simple to do everyday calculations on your phone or tablet

Let Calculator Plus and your phone or tablet finally put that handheld calculator to rest!

This is an ad supported version - our ad-free version is also available.

Calculator Plus (C) 2014 Digitalchemy, LLC

NHN-1 is a free advanced engineering and scientific calculator with a transparent widget that has fractions and percentage:

•A resizeable widget with arithmetic, percentage button, and fractions.
•Expression (formula) based input.
•Fraction input and output with conversion to proper fraction, mixed fraction and decimal. Even the quadratic or cubic root functions, for instance, will return fractions when the answer can be written as a fraction.
•Full history with buttons that load old results, in case you need to start over from a previous point.
•Unlimited memory slots that can be named and are always displayed on screen.
•Multiple input fields except on small phones. This let's you do short side calculations without losing your place.
•Pre-packaged functions for quadratic equations as well as many geometric formulae.
•Buttons that store user defined functions that are created by binding an argument to a binary operator.
•Visualization of multivalued complex functions (roots, inverse trigonometric, logarithm)
•Visualization of quadratic and cubic functions
•Visualization of angles returned from inverse trigonometric functions.
•Complex numbers are very easy to work with, and all functions work with complex numbers where they are defined (inverse hyperbolic cosine, for instance).
•There is a fourth layout for small phones that is not shown in the screen shots.
•A unit conversion utility that lets you build arbitrary composite units. Conversion factors are written to the history, so you can bind the factor with multiplication to do the same conversion many times.

The layouts are designed to be ergonomic for each of four device sizes in portrait and landscape. Here are some examples of what we've done to make the calculator easy and speedy to work with:
•On small tablets in landscape, the keys are split so you can operate the calculator with two thumbs.
•On small phones, the numeric keypad is right under your thumb when holding the device with one hand.
•Square root, square, inverse and negation are all close to the numeric keypad.
•On small tablets, the long "NHN-1" button is a gesture recognizer that lets you scroll the six input fields with your left thumb. That way you don't have to let go of the device with your right hand to click an input field.

HP-45 scientific calculator is a true hardware emulation of the classic HP-45 calculator will behave just like the original.

The following Android functions are supported:

• Calculation results can be copies to the clipboard.
• Can be installed on the SD-Card.
• Participates in Androids build in backup and restore.
• Honeycomb Tablet compatible.
• Extra Printer for Honeycomb Tablets (visit our web-page for screen shot).

Please visit our web-page for more informations and support. Remember that the Market-Comments have no answer function and I can't help you if you post there.

Full emulation of the classic and ground breaking HP-67 calculator produced back in the early 70's. An amazing device developed by Hewlett Packard which is still very useful.

The HP Print Service plugin is preinstalled on select HP, Nexus and Samsung Android OS smartphones and tablets (see compatibility list below).
The plugin enables printing to many HP inkjet and LaserJet printers, All in One printers and MFPs without the need for third party apps or additional print drivers. Easily print photos, webpages and documents when your mobile device is connected to a compatible HP printer through a wireless network or a direct wireless connection to the printer. Control print settings including color, number of copies, paper orientation and paper type.
When plugin updates are available your device will notify you. Please adjust your settings to automatically update this plugin, or accept updates manually. The plugin is integrated into operating system and cannot be uninstalled or moved to SD card.
If your device is not listed below, this plugin is not compatible with your device at this time. If your Android OS device does not have printing functionality builtin to the OS, please download the HP ePrint app in the Google Play store to enable easy printing to many HP printers.

Compatible with these devices (as of Nov 2013):
• Android 4.4 (KitKat) devices
• Samsung Galaxy Note 3, S4
• HP Slate 7
• HP Slate 7 HD
• HP Slate 8 Pro
• HP Slate 10 HD
• HP Slate 10
• HP Slate 21
• HP SlateBook

Compatible HP printers:
http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&lc=en&dlc=en&docname=c03722645

Famous C64 emulator, ported to Android.
Sources are available on GitHub, search for FrodoC64.

Amiga emulator, based on UAE4All. You need a ROM copy of your own Amiga ! Touch screen or trackball as mouse control.