Math Calculators
Free online math calculators and tools. Pick one to get started.
Percentage CalculatorSolve the three most common percentage problems in one place.Average CalculatorFind the mean, median, sum, smallest and largest of a list of numbers.Quadratic Equation SolverSolve ax² + bx + c = 0 and see the roots and discriminant.GCD and LCM CalculatorFind the greatest common divisor and least common multiple of two numbers.Random Number GeneratorPick one or many random whole numbers between a minimum and a maximum.Area CalculatorFind the area of a rectangle, triangle, circle or parallelogram.Pythagorean Theorem CalculatorFind the hypotenuse of a right triangle from the two shorter sides.Fraction CalculatorAdd, subtract, multiply or divide two fractions and get the answer in lowest terms.Ratio CalculatorSolve a ratio problem A : B = C : X to find the…Exponent CalculatorRaise any number to any power.Square Root CalculatorFind the square root, cube root and square of a number.Logarithm CalculatorFind the logarithm of a number for any base.Factorial CalculatorFind n! for any whole number from 0 to 170.Prime Number CheckerCheck if a number is prime and see its prime factors.Permutation and Combination CalculatorFind nPr and nCr for any n and r.Standard Deviation CalculatorFind the standard deviation, variance and mean of a list of numbers.Slope and Distance CalculatorFind the slope, distance, midpoint and angle between two points.Circle CalculatorFind the diameter, circumference and area of a circle from its radius.Triangle CalculatorFind the area, perimeter and angles of a triangle from its three sides.Volume CalculatorFind the volume and surface area of common 3D shapes.Rounding CalculatorRound a number to any number of decimal places.Scientific Notation CalculatorWrite any number in scientific notation and e-notation.Number Base ConverterConvert numbers between decimal, binary, octal and hexadecimal.Roman Numeral ConverterConvert a number from 1 to 3999 into Roman numerals.Percentage Difference CalculatorFind the percentage difference between two numbers.Percent Error CalculatorFind the percent error between a measured value and the true value.Arithmetic Sequence CalculatorFind the nth term and the sum of an arithmetic sequence.Geometric Sequence CalculatorFind the nth term and the sum of a geometric sequence.Z-Score CalculatorFind the z-score of a value and the share of data below it.Probability CalculatorFind the chance of two independent events happening together or separately.