Science

Computes basic operations, 1/z, pi, exponent, log, trig, and polygamma functions. Includes memory feature.

Online calculators for a variety of conversions and calculations.

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.

Measures the difference in value using percentages. Includes bar graphs with the answer.

Provides online calculators for web-enabled mobile phones and PDAs, including financial, fitness and conversion calculators.

A collection of online calculators, including prime number finder, fraction solver, and solution finder for calculus equations.

Helps to compute how many days have passed from an earlier time to the present day.

Provides a set of online calculators for math and physics.

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.

Guide to online calculators, including those designed for home, travel, finance, health, and small business.

Free online graphing calculator for education use with 2d, 3d, cartesian, polar, calculus, differential equations, scientific, implicit function components.

Java applet online calculator.

Free online scientific notation calculator. Functions include math expressions, plots, unit converter, equation solver, complex numbers and calculation history.

Online tool for converting binary, decimal, hexadecimal and ASCII text.

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. [Modern GUI, Adobe-Flash based]

Offers an online calculator and a multi function unit converter.

Free online calculators for finance, math, algebra, fractions, geometry, physics, time and statistics. Converters for common conversions.

Free integration solver that also does derivatives, equations and plots.

Calculator for eigenvalues and eigenvectors. Includes a test example and various options.

Online mathematical calculator with basic and scientific modes. Shows calculation history.

Provides functions common in science and engineering. Creates a printable sequence of calculations that can be bookmarked or shared as URL.

Calculator for solving a general quadratic equation.

An advanced online scientific calculator for students of mathematics.

Convert between various units of measurement, calculate volume and area, convert weight to volume and volume to weight, gravel and mortgage calculators.

Free online calculator use for decision making, discovery and learning.

Collection of online math calculators for algebra, calculus, statistics.

An easy to use online calculator based on the JavaScript function eval().

A math resource website providing an online scientific calculator, and numerous special purpose calculators and unit converters

Math online calculators and solvers for problems including polynomial equations, rational expressions, systems of equations, matrices, complex numbers, and analytic geometry.

An arbitrary-precision binary calculator, which adds, subtracts, multiplies, or divides integer and fractional values.

Free calculator graphs up to 5 equations, finds intersections and lets you save picture of graph to your computer.

Shannon entropy allows to estimate the average minimum number of bits needed to encode a string of symbols based on the alphabet size and the frequency of the symbols.

Interactive square root calculator that can handle negative, imaginary, and complex numbers.

Online graphing calculator. Free to use, supports hundreds of simultaneous equations, and supports interactive exploration via sliders.

A basic online calculator similar to many electronic calculators.

Mobile friendly tip calculator which shows exactly what to put on your receipt.

Online tools for fast simplifying fractions and mixed numbers.

The set of tools and tables used for calculating different math (and non-math) problems.

Collection of simple calculators for general math, algebra, plots and geometry, trig. and calculus.

A collection including engineering, finance and maths calculators.

Collection for science, travel, students, health, education, weather, math, and business. Includes graphing calculators and measurement conversions.

The Agricultural & Biological Engineering (ABE) Department at Mississippi State University's collection of volumetric calculators for a variety of shapes. Including cylinder sphere barrel pyramid and dome.

Provides a series of matrix calculators including Gauss-Jordan Elimination and Cramer's Rule. Mobile version available.

Online solver, simplifier and evaluator. Includes discussion and recently solved equations.

Online percentage calculator. In English, Spanish and Russian.

Calculate the tightening torques for VDI 2230, metric and UNE 17-108-81 fastenings. Includes instructions, markings and formulas.