Math Calculators
50 free calculators.
Absolute ValueFind the absolute value of a number, its distance from zero with the sign removed.Arithmetic SequenceFind the nth term and the sum of the first n terms of an arithmetic sequence.Circle AreaFind the area inside a circle from its radius.Circle CircumferenceFind the distance around a circle from its radius.CombinationFind how many ways r items can be chosen from n items when order does not matter.Cone VolumeFind the volume of a cone from its radius and height.Cube RootFind the cube root of a number, the value that multiplied by itself three times gives the original number.Cube VolumeFind the volume of a cube from the length of one edge.Cylinder VolumeFind the volume of a cylinder from its radius and height.Decimal to FractionConvert a decimal into a fraction in its simplest form.Decimal to PercentConvert a decimal number into a percentage by multiplying by 100.Distance Between PointsFind the straight-line distance between two points on a flat plane.Ellipse AreaFind the area of an ellipse from its two semi-axes.FactorialWork out the factorial of a whole number, the product of all positive whole numbers up to it.FibonacciFind the nth Fibonacci number, where each term is the sum of the two before it.Fraction to DecimalConvert a fraction into its decimal value by dividing the numerator by the denominator.Geometric SequenceFind the nth term of a geometric sequence, where each term is multiplied by a common ratio.Greatest Common DivisorFind the largest whole number that divides two numbers exactly, with no remainder.Least Common MultipleFind the smallest positive number that is a multiple of both of two numbers.LogarithmFind the logarithm of a number to a chosen base, the exponent that the base must be raised to.MeanFind the average of a list of numbers by adding them up and dividing by how many there are.MedianFind the middle value of a list of numbers, or the average of the two middle values for an even count.MidpointFind the point exactly halfway between two points on a flat plane.ModeFind the value that appears most often in a list of numbers.Parallelogram AreaFind the area of a parallelogram from its base and vertical height.Percent to DecimalConvert a percentage into a decimal number by dividing by 100.PercentageFind what percentage one number is of another, with the result shown as a percent.Percentage DecreaseWork out how much a value has fallen in percentage terms, from an old value to a new value.Percentage IncreaseWork out how much a value has grown in percentage terms, from an old value to a new value.PermutationFind how many ways r items can be chosen and arranged in order from n items.PowerRaise a base number to an exponent, working out repeated multiplication in one step.Prime NumberCheck whether a whole number is prime, composite, or neither.ProportionSolve a proportion of the form a over b equals x over d, finding the missing value x.Pyramid VolumeFind the volume of a rectangular pyramid from its base length, base width, and height.Pythagorean TheoremFind the hypotenuse of a right triangle from its two shorter sides.Quadratic EquationFind the roots of a quadratic equation of the form ax squared plus bx plus c equals zero.RangeFind the spread of a list of numbers, from the smallest to the largest value.RatioSimplify a ratio of two numbers to its smallest whole-number form.Rectangle AreaFind the area of a rectangle from its length and width.Rectangle PerimeterFind the distance around a rectangle from its length and width.Regular Polygon AreaFind the area of a regular polygon from its number of sides and side length.RoundingRound a number to a chosen number of decimal places.Scientific NotationConvert an ordinary number into scientific notation, a number between 1 and 10 times a power of ten.SlopeFind the slope of a straight line through two points, the rise divided by the run.Sphere VolumeFind the volume of a sphere from its radius.Square RootFind the square root of a number, the value that multiplied by itself gives the original number.Standard DeviationMeasure how spread out a list of numbers is around its mean, using the population formula.Trapezoid AreaFind the area of a trapezoid from its two parallel sides and its height.Triangle AreaFind the area of a triangle from its base and height.VarianceFind the variance of a list of numbers, the average squared distance of each value from the mean.