GraphicMaths Calculators
This website will include an evolving collection of free, online calculators, plotters, and other resources, for solving various mathematical problems.
SEE THE LIST OF AVAILABLE CALCULATORS HERE.
It is currently at an early stage. I hope to include a lot more calculators in the future, including technical and financial calculators.
The operation of most of the calculators should be reasonably self-explanatory, but there is additional help available here
Popular calculators
Pythagoras Triangle Solver | Quadratic Equation Solver | XY graphs