Math and Science On-line Calculators
Unit Conversion Calculators
- Unit
Conversion
Of area, density, energy, force, length, mass, power, pressure, speed, temperature, volume and bytes.
Engineering Calculators
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AskNumbers.com
Converts a wide range of factors from acceleration, force, sound, torque …. -
Beam Calculators
Computes stresses in three types of beams: cantilever, simply- supported and mixed-supported. (One free session before payment required.)
Chemistry Calculators
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Dissolved Oxygen Calculator
Oxygen in water obeys Henry's law fairly closely. This calculator gives a reasonable estimate for a range of water temperatures. - Formula To
Mass To Formula
Allows one to process chemical formulas to mass, and to process a given mass to formulas. The Java applet displays the six best chemical compound matches. -
Gas Law Calculator
Solves the ideal gas, van der Waals, and Dieterici equations of state for pressure, volume, temperature, or moles. - Molecular
Formula
Finds best and all close matches from HRMS weight. -
pH Calculator
Calculates the pH of a solution of known concentration.
Mathematics Calculators
- The
Integrator
Solves integrals used to calculate, in general, numeric values of areas, volumes, centroids, lengths, etc. - Logarithmic and
Trigonometric Functions Calculator
Calculates logarithms, trigonometric functions, and the logarithms of trigonometric functions. - Miscellaneous Mathematical Utilities
Has root-finding routines, utilities for finding maxima/minima of functions, n equations in n unknowns , eigenvalues and eigenvectors, numerical integration, data fitting, and interpolation. - QuickMath
Gives instant solutions to all kinds of math problems, from algebra and equation solving right through to calculus and matrices. -
Shortest distance between two points on Earth
Computes the distance given the longitude and latitude of starting and finishing locations. (It's a close approximation. Daily tides are not considered.) -
Simple Regression Utility
Will perform a regression (least squares model) on x and y data you enter and plot the curve based on the desired shape (equation). -
Webmath.com
Useful for statistical data analysis: data plotter, standard deviation, histogram.
Research
- Simple Interactive Statistical Analysis (SISA)
Allows one to do statistical analysis directly via the Internet.
Thermodynamics and Heat Transfer Calculators
- Gibbs
Free Energy
Gives both qualitative and quantitative results. -
Heat Transfer - Conduction
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Heat Transfer - Radiation