1. fxSolver is an free online math solver, equation library, graphing calculator and science/engineering problem helper. To get started, add some formulas, fill in any input variables and press "Solve."

  2. SpeedCrunch. SpeedCrunch is a high-precision scientific calculator featuring a fast, keyboard-driven user interface. It is free and open-source software, licensed under the GPL. Download Documentation Donate .

  3. Photomath is a mobile app that will give you the ability to test your equations through a simple calculator interface that will fully explain the solution in a step-by-step fashion. Read more about Photomath.

  4. Any individual who has ever gazed restlessly at a knotty condition needing an answer has longed for some sort of hatchet to slice through the issue.

  5. Mathematica is a technical computing system with a broad range of uses throughout various fields of discipline.

  6. Homework Help & Solver

  7. The built in Calculator on the iPhone.

  8. Learn and help others learn

  9. Get your own corner of the Web for less! Register a new .COM for just $9.99 for the first year and get everything you need to make your mark online — website builder, hosting, email, and more.

  10. Math toolbox for iOS. Advanced calculator features with a tape-like history, not requiring internet...

  11. Get help and support for Windows —Windows 10, Windows 8.1, Windows 7, and Windows 10 Mobile.

  12. Tiny, powerful, free mathematical program with WYSIWYG editor and complete units of measurements support.