Web-Based - Calculators - Math - Science -

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Computers: Hardware: Calculators (68)
Recreation: Travel: Preparation: Currencies: Exchange Rates (17)
Science: Math: Software: Calculators (52)

Martindale's Calculators - A collection of calculators for the sciences, business and everyday measurements. Organized by subject area.
ABE Volume Calculator Page - A collection of volumetric calculators for a variety of shapes. Including cylinder sphere barrel pyramid and dome.
AbaCal Beta - Free online math calculator with formula library. Provides a getting started document to help run abaCal and use its full potential.
Avasmath 80 - Online programable scientific calculator with scientific functions and replayable calculations.
Binary Hex Converters - Online tool for converting binary, decimal, hexadecimal and ASCII text.
Bit Calculator - Online calculator that makes conversions between bits, bytes, kilobits, kilobytes, megabits, megabytes, gigabits, gigabytes, terabits, terabytes, petabits, petabytes, exabits, exabytes, zettabits, zettabytes, yottabits, yottabytes.
Calc - This tool allows you to convert the same number between its representations under different number systems, such as decimal, hexadecimal, octal and binary numeric systems.
Calc Result - Provides a set of online calculators for math and physics.
Calc.Matthen.com - Online integrator, differentiator, graph plotter and formula manipulator.
CalcMachine - Easy to use online calculator and expression evaluator. It supports basic arithmetic, trigonometry and logarithmic functions.
CalcNexus - Provides online calculators for web-enabled mobile phones and PDAs, including financial, fitness and conversion calculators.
Calculate Now - A collection of online calculators for science, business and everyday living
Calculate for Free - Performs basic math operations, as well as square root and percentages. Includes memory save and recall.
Calculator - Online calculators for a variety of conversions and calculations.
Calculator Pi - Provides functions common in science and engineering. Creates a printable sequence of calculations that can be bookmarked or shared as URL.
Calculator Soup - Free online calculators for finance, math, algebra, fractions, geometry, physics, time and statistics. Converters for common conversions.
Calculator Tab - Free scientific online calculator, which includes long-term memory, trigonometric functions, logarithmic functions, brackets and the modulo operation. It can be opened in a small pop-up window and includes a user guide.
Calculator for Eigenvalues and Eigenvectors - Includes a test example and various options.
Calculatoredge - Provides several online calculator tools for solving complex equations and formulas in the fields of mechanical, electrical and chemical engineering, physics, math, electronics, metallurgy and finance.
Calculatoria - Online mathematical calculator with basic and scientific modes. Shows calculation history.
Cleave Books - Specialist Calculators - Features converters for perimeter measurements of geometric figures, fractions, percentages, number bases, loan repayments, growth and decay, cost of living index, fuel consumption, flow rate, specific energy, viscocity, and heat capacity.
Coggit - Provides online calculation and conversion tools for math, currency and tax.
Convertalot - Collection of free Java measurements converters, calculators, and unit translators.
Country Distance Calculator - Calculates distance between any two cities for selected country and locates them on the Map. Driving directions are also available for some of the countries.
Dario Alpern's Complex Number Calculator - Computes basic operations, 1/z, pi, exponent, log, trig, and polygamma functions. Includes memory feature.
Days Calculator - Helps to compute how many days have passed from an earlier time to the present day.
Decimal/Binary Converter - An arbitrary-precision, decimal to binary and binary to decimal converter, which converts both integer and fractional values.
DigitConvert - Convert to and from any number base with radix points. Also add, subtract, multiply, and divide numbers of any base and output to any base.
Encalc - Free online scientific calculator supporting formulas and unit calculations.
EngNet Engineering Units Converter - Online calculator provides conversions between a number of common (and not so common) units.
Equalsto - Offers an online calculator and a multi function unit converter.
Function Grapher - Graph functions in 2D, 3D and polar coordinate system. Up to 3 functions in a single graph.
GCalc -- Java Mathematical Graphing System - Free online graphing calculator for education use with 2d, 3d, cartesian, polar, calculus, differential equations, scientific, implicit function components.
Hiox Calculator & Converter - Features calculators for arithmetic functions, scientific computations, binary conversions, areas, financial interest, prime numbers, recurring fractions, factoring, matrices, HEX color converter, date and day calculations, as well as for measuring bandwidth.
Monachos Calculators - Online calculators with variety of engineering functions, including unit conversion, periodic table, piping applications, and electrical applications.
Online Calculator - A collection of online calculators
Online Matrix Calculator - Calculates matrix determinant and inverse. Performs LU, Cholesky, QR, SVD decompositions. Calculates eigenvalues and eigenvectors.
Online Scientific Calculator - Free scientific calculator for mathematics, physics and engineering. It includes support for fraction, base conversion, matrix, equation solver and advanced functions.
Percent Change Calculator - Measures the difference in value using percentages. Includes bar graphs with the answer.
Pocket Calculator - Online calculator, written in Java. Includes square root button and number memory. Source code can be downloaded.
ScatterMall.com - Free calculators for science, travel, students, health, education, weather, math, and business. Includes graphing calculators and measurement conversions.
Scientific Calculator - Java applet online calculator.
Scientific Calculator - 16 function online calculator, written in JavaScript.
Scientific Calculator - Javascript calculator with basic scientific functions.
Sicyon - Online graphing calculator.
Stack Scientific Calculator RPN - Javascript scientific calculator using RPN.
Tampile Temperature Conversion - Converts a temperature from Celsius, Fahrenheit, Kelvin or Rankine.
The Number Empire - A collection of online calculators, including prime number finder, fraction solver, and solution finder for calculus equations.
Web 2.0 Scientific Calculator - Free online scientific notation calculator. Functions include math expressions, plots, unit converter, equation solver, complex numbers and calculation history.
Wolfram Mathematica: Online Integrator - Free integration solver that also does derivatives, equations and plots.
eCalc - Free online calculator that supports both a basic and advanced scientific mode. It includes support for the following features: complex numbers, unit conversion, base conversion, decimal to fraction, RPN and algebraic modes and equation solver.
iFigure - Guide to online calculators, including those designed for home, travel, finance, health, and small business.

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