Math Calculators
Arithmetic, algebra, geometry and number theory — with steps and formulas where they help.
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Scientific CalculatorFull scientific calculator with trig, logs, powers, roots, memory and history.
Graphing CalculatorPlot up to four functions of x — pan, zoom, trace values and save as PNG.
Percentage CalculatorWork out percentages, percentage change, and what percent one number is of another.
Fraction CalculatorAdd, subtract, multiply and divide fractions and mixed numbers.
GCD & LCM CalculatorGreatest common divisor and least common multiple of several numbers.
Prime Number CheckerCheck if a number is prime, factorize it and find nearby primes.
Quadratic Equation SolverSolve ax² + bx + c = 0 with real or complex roots, vertex and discriminant.
Ratio CalculatorSimplify ratios and solve proportions like A:B = C:?.
Triangle CalculatorSolve any triangle from sides and angles — area, angles, perimeter.
Area & Volume CalculatorArea, perimeter, volume and surface area of common 2D and 3D shapes.
Aspect Ratio CalculatorAspect ratio from width and height — and resize dimensions without distortion.
DPI / PPI CalculatorScreen pixel density, or how big an image prints at a given DPI.
Scientific Notation ConverterConvert numbers to and from scientific, E and engineering notation.
Significant Figures CalculatorCount significant figures and round any number to a chosen number of sig figs.
Fraction ⇄ Decimal ConverterConvert decimals to simplified fractions and fractions or mixed numbers to decimals.
Fibonacci Sequence GeneratorList Fibonacci numbers — exact, even when they have hundreds of digits.
Arithmetic Sequence CalculatorFind the nth term and the sum of an arithmetic sequence.
Geometric Sequence Calculatornth term, partial sums and infinite sums of a geometric sequence.
Polynomial EvaluatorEvaluate a polynomial and its derivative at any x.
Complex Number CalculatorAdd, subtract, multiply, divide and raise complex numbers; polar form.
Linear Equation SolverSolve one-variable linear equations like 3x + 5 = 2x − 7.
System of Equations SolverSolve 2×2 and 3×3 systems of linear equations.
Slope CalculatorSlope, line equation, intercepts and angle from two points.
Distance Between Two PointsDistance between two points in 2D or 3D, with the midpoint.
Midpoint CalculatorThe midpoint between two points, plus distance.
Circle Equation CalculatorStandard and general form of a circle; center and radius from either.
Matrix CalculatorDeterminant, inverse, transpose, rank, and matrix addition and multiplication.