Maths calculators
The workings you used to do on paper, done exactly.
Graphing CalculatortoolPlot functions, zoom and trace — with the maths parsed, not evaluated.Percentage CalculatorEvery percentage question, answered at once.Fraction CalculatorAdd, subtract, multiply and divide fractions, simplified.Ratio CalculatorSimplify ratios, scale them, and solve for a missing term.Mean, Median & Mode CalculatorEvery summary statistic for a list of numbers.Standard Deviation CalculatorPopulation and sample standard deviation, variance and standard error.Quadratic Equation SolverRoots, vertex and discriminant for ax² + bx + c = 0.Triangle CalculatorMissing side, area, perimeter and angles of a right triangle.Circle CalculatorArea, circumference, diameter and radius from any one of them.GCD & LCM CalculatorGreatest common divisor and lowest common multiple, with factors.Scientific Notation ConverterConvert between decimal, scientific and engineering notation.