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Top Scientific Scientific 

Online Scientific Calculator
A simple and handy scientific calculator.

Scientific Calculator
Calculate problems in science, engineering, and mathematics.


You can use these calculators to calculate constructive reals, newtons method, complex numbers, logarithms, and more..

Scientific Calculator
This is a simple but fairly general numeric expression evaluator, with a large number of built-in functions, including statistical distribution functions.

Units Converter
This tool helps you convert between numerous units. You have an option to convert units of angles, areas, data, energy, length, light, pressure, temperature, time, velocity, volume and weight.
CGI

Newton's Method
Enter an equation in terms of the variable x. Then enter a starting guess for x.

7Stones Products: Octonion Calculator
7gCalc is a conventional scientific calculator with a twist: pressing a function button produces a graph of the function (if its value is defined for the given input) and shows the (x, y) point on the graph corresponding to input and output. One can also record steps and construct unique functions.

Big number scientific calculator
Big Number Scientific Calculator is a high-precision calculator features complex numbers, precision up to 1 million digits and exponents up to 1 billion.

Carl's 'Printing' Calculator
Paper Tape Scientific Calculator works just like a printing scientific calculator, it records everything you do in the scrolling window at the right just as if it was being printed on a strip of paper. This allows you to review your work to check for mistakes.

Circular measure conversion online.
Conversions for degrees, radians, minutes, nautical, artillery, etc.

Dacigrams to Grams Conversion
Use the following calculator to convert between grams and decigrams.

Dario Alpern's Complex number calculator
Reverse polish notation complex number calculator capable of performing all basic operations, powers, roots, logarithms, trigonometric functions, hyperbolic functions, gamma and polygamma functions.

Dario Alpern's Continued Fraction Calculator
This calculator can find the continued fraction expansions of rational numbers and quadratic irrationalities.

Dario Alpern's Gaussian Integer Factorization applet
Finds the factors of complex numbers of the form a+bi where a and b are integers. It also includes a complete calculator with operators and functions using gaussian integers.

Dario Alpern's Generic Two integer variable equation solver
Diophantine equation ax2 + bxy + cy2 + dx + ey + f = 0 solver, where the unknowns x and y can be integer numbers only.

Dario Alpern's Quadratic Modular Equation Solver
This calculator can solve equations of the form ax2 + bx + c = 0 (mod n) where the integer unknown x is in the range 0 <= x < n. In particular, it can find modular square roots by setting a = -1, b = 0, c = number whose root we want to find and n = modulus.

Discrete logarithm calculator
Applet that finds the exponent in the expression BaseExponent = Power (mod Modulus).

Factorization using the Elliptic Curve Method
Applet that can be used to find 20- or 30-digit factors of numbers or numerical expressions up to 10000 digits long. It also computes the number and sum of divisors, Euler's totient and Moebius, and its decomposition as a sum of up to 4 perfect squares.

HP16C Emulator
This website provides a fully functional emulator of the Hewlett Packard HP16C Computer Scientist calculator.

JavaScript Physics Computer
Pocket computer for physics.

Polynomial Factorization applet
This calculator can find the decomposition of a polynomial modulo a prime in a product of irreducible factors.

Postfix Calculator
This calculator uses postfix notation.

Scientific Calculator - Chemistry Online Education
Online scientific calculator.

Sum of four cubes
This calculator can find the decomposition of a number or numerical expression that is not congruent to 4 or 5 (mod 9) in a sum of four cubes.

Sum of squares
This calculator can find the decomposition of a number or numerical expression in a sum of up to four squares. It does not need its prime factorization.

Dredging Engineering: Scientific Calculator
Designed to accept data and operating instructions in reverse polish notation, avoiding the use of parenthesis. It implements a simple 9-levels stack of floating-point numbers, with various management commands, arithmetic operations and functions, and predefined physical constants.


iPhone and iPod calculators

MiniCalc Scientific Calculator for iPhone and iPod Touch
A nice little scientific calculator.
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App Store - PCalc Lite Calculator
PCalc Lite is a fully functional and free taste of our popular scientific calculator. It includes an optional RPN mode, multiple undo and redo, unit conversions and constants, as well as two stylish themes and our highly praised design.

App Store - powerOne Scientific Calculator - Lite, Free Edition
powerOne® combines an algebraic and RPN calculator with simple, customizable, spreadsheet-like templates, giving you hundreds to choose from. Create your own, keep a history and share with others.

Calculator
Here's a full-featured scientific calculator for your iPhone or iPod touch. It's really six calculators in one, with new button sets exposed by a tap on the tab bar. Features are important, but it's the little things that count, right? Little things like a design that looks like it belongs on your iPhone; big, easy to press buttons; a delete key in case you hit the wrong one; and picking up right where you left off if you are interrupted by a phone call--even in the middle of entering a number.

Calculator+
Calculator+ is an easy to use, beautifully packaged calculator for your iPad or iPhone that includes both a standard and scientific calculator.

Crystal Calculator Free - Scientific Calculator...
Scientific Calculator shows your complete calculation formula, Comment for echo value in paper tape list, In-App Email formated formula paper tape.

HP iPhone Calculators | Uncrate
Turn your high-tech iPhone into a decades old single-purpose device with HP iPhone Calculators.

PCalc
PCalc is ideal for scientists, engineers, students, programmers, or indeed anybody looking for a feature-rich calculator for the iPad, iPhone, or iPod touch. It includes an extensive set of unit conversions, a paper tape, an RPN mode, engineering and scientific notation, as well as support for hexadecimal, octal and binary calculations.
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PCalc RPN Calculator
PCalc is ideal for scientists, engineers, students, programmers, or indeed anybody looking for a feature rich calculator. It includes an optional RPN mode and multi-line display, a choice of button layouts, an extensive set of unit conversions, a paper tape, multiple undo and redo, engineering and scientific notation, as well as support for hexadecimal, octal, and binary calculations.

TouchCalc
TouchCalc is a comfortable calculator program and offers several different modes. - The scientific mode offers all the usual functions and operations like the basic arithmetical operations, power, logarithm, roots, trigonometry etc. - The bit/integer mode offers logical operations (AND, OR, XOR, >>, etc.) on bit level. All values can be displayed as binary, octal, decimal or hexadecimal numbers. Calculations can be done in 8, 16 32 or 64 bits. - In the statistics mode you can create a sample by adding several values and then calculate mean, median, quantil values, variance, standard deviation, range etc. Colorized keys will help to distinguish between the different categories of the functions and operations.


iPad calculators

App Store - PCalc Lite Calculator
PCalc Lite is a fully functional and free taste of our popular scientific calculator. It includes an optional RPN mode, multiple undo and redo, unit conversions and constants, as well as two stylish themes and our highly praised design.

App Store - powerOne Scientific Calculator - Lite, Free Edition
powerOne® combines an algebraic and RPN calculator with simple, customizable, spreadsheet-like templates, giving you hundreds to choose from. Create your own, keep a history and share with others.

Calculator
Here's a full-featured scientific calculator for your iPhone or iPod touch. It's really six calculators in one, with new button sets exposed by a tap on the tab bar. Features are important, but it's the little things that count, right? Little things like a design that looks like it belongs on your iPhone; big, easy to press buttons; a delete key in case you hit the wrong one; and picking up right where you left off if you are interrupted by a phone call--even in the middle of entering a number.

Calculator+
Calculator+ is an easy to use, beautifully packaged calculator for your iPad or iPhone that includes both a standard and scientific calculator.

CalculatorBox
Four orientations of screen, Four Calculators! An ultimate and polished design All-In-One calculator for iPhone/iPod touch. Absolutely different from other calculators you see in App Store. Yes, it's an All IN ONE calculator. Just rotate your device and you will get four calculators: - Standard - Scientific - Programmer - Statistics

Crystal Calculator Free - Scientific Calculator...
Scientific Calculator shows your complete calculation formula, Comment for echo value in paper tape list, In-App Email formated formula paper tape.

PCalc RPN Calculator
PCalc is ideal for scientists, engineers, students, programmers, or indeed anybody looking for a feature rich calculator. It includes an optional RPN mode and multi-line display, a choice of button layouts, an extensive set of unit conversions, a paper tape, multiple undo and redo, engineering and scientific notation, as well as support for hexadecimal, octal, and binary calculations.

TouchCalc
TouchCalc is a comfortable calculator program and offers several different modes. - The scientific mode offers all the usual functions and operations like the basic arithmetical operations, power, logarithm, roots, trigonometry etc. - The bit/integer mode offers logical operations (AND, OR, XOR, >>, etc.) on bit level. All values can be displayed as binary, octal, decimal or hexadecimal numbers. Calculations can be done in 8, 16 32 or 64 bits. - In the statistics mode you can create a sample by adding several values and then calculate mean, median, quantil values, variance, standard deviation, range etc. Colorized keys will help to distinguish between the different categories of the functions and operations.

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