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Math Calculators

125 calculators and 1 tool.

1 Scientific CalculatorUse sin, cos, tan, logarithms, powers and roots with a compact keypad, no sign-up, no download.2 PercentageFind what percentage one number is of another, with the result shown as a percent.3 Percentage DecreaseWork out how much a value has fallen in percentage terms, from an old value to a new value.4 Percentage IncreaseWork out how much a value has grown in percentage terms, from an old value to a new value.5 Math Percentage Calculator 3Find math percentage increase from old and new.6 Basic CalculatorAdd, subtract, multiply or divide two numbers instantly.7 Math Algebra CalculatorFind math algebra value from x and constant.8 Decimal to FractionConvert a decimal into a fraction in its simplest form.9 Fraction to DecimalConvert a fraction into its decimal value by dividing the numerator by the denominator.10 Fraction Addition CalculatorAdd two fractions and show the decimal result.11 Math Fraction Calculator 2Find math fraction percent from numerator and denominator.12 Average CalculatorFind the average of two numbers.13 Math Average Calculator 2Find math average from sum and count.14 Math Average CalculatorFind math average of two numbers.15 Square RootFind the square root of a number, the value that multiplied by itself gives the original number.16 Absolute ValueFind the absolute value of a number, its distance from zero with the sign removed.17 Arithmetic SequenceFind the nth term and the sum of the first n terms of an arithmetic sequence.18 Circle AreaFind the area inside a circle from its radius.19 Circle CircumferenceFind the distance around a circle from its radius.20 CombinationFind how many ways r items can be chosen from n items when order does not matter.21 Cone VolumeFind the volume of a cone from its radius and height.22 Cube RootFind the cube root of a number, the value that multiplied by itself three times gives the original number.23 Cube VolumeFind the volume of a cube from the length of one edge.24 Cylinder VolumeFind the volume of a cylinder from its radius and height.25 Decimal to PercentConvert a decimal number into a percentage by multiplying by 100.26 Distance Between PointsFind the straight-line distance between two points on a flat plane.27 Ellipse AreaFind the area of an ellipse from its two semi-axes.28 FactorialWork out the factorial of a whole number, the product of all positive whole numbers up to it.29 FibonacciFind the nth Fibonacci number, where each term is the sum of the two before it.30 Geometric SequenceFind the nth term of a geometric sequence, where each term is multiplied by a common ratio.31 Greatest Common DivisorFind the largest whole number that divides two numbers exactly, with no remainder.32 Least Common MultipleFind the smallest positive number that is a multiple of both of two numbers.33 LogarithmFind the logarithm of a number to a chosen base, the exponent that the base must be raised to.34 MeanFind the average of a list of numbers by adding them up and dividing by how many there are.35 MedianFind the middle value of a list of numbers, or the average of the two middle values for an even count.36 MidpointFind the point exactly halfway between two points on a flat plane.37 ModeFind the value that appears most often in a list of numbers.38 Parallelogram AreaFind the area of a parallelogram from its base and vertical height.39 Percent to DecimalConvert a percentage into a decimal number by dividing by 100.40 PermutationFind how many ways r items can be chosen and arranged in order from n items.41 PowerRaise a base number to an exponent, working out repeated multiplication in one step.42 Prime NumberCheck whether a whole number is prime, composite, or neither.43 ProportionSolve a proportion of the form a over b equals x over d, finding the missing value x.44 Pyramid VolumeFind the volume of a rectangular pyramid from its base length, base width, and height.45 Pythagorean TheoremFind the hypotenuse of a right triangle from its two shorter sides.46 Quadratic EquationFind the roots of a quadratic equation of the form ax squared plus bx plus c equals zero.47 RangeFind the spread of a list of numbers, from the smallest to the largest value.48 RatioSimplify a ratio of two numbers to its smallest whole-number form.49 Rectangle AreaFind the area of a rectangle from its length and width.50 Rectangle PerimeterFind the distance around a rectangle from its length and width.51 Regular Polygon AreaFind the area of a regular polygon from its number of sides and side length.
52 RoundingRound a number to a chosen number of decimal places.

Frequently asked questions

What are Math calculators?

Math calculators on BuildCalc are free tools that give instant results from the numbers you enter.

Are Math calculators free?

Yes, all Math calculators are free, with no sign-up and no download.

How do I use a Math calculator?

Open a calculator from the list, enter your numbers, and read the instant result.

53 Scientific NotationConvert an ordinary number into scientific notation, a number between 1 and 10 times a power of ten.54 SlopeFind the slope of a straight line through two points, the rise divided by the run.55 Sphere VolumeFind the volume of a sphere from its radius.56 Standard DeviationMeasure how spread out a list of numbers is around its mean, using the population formula.57 Trapezoid AreaFind the area of a trapezoid from its two parallel sides and its height.58 Triangle AreaFind the area of a triangle from its base and height.59 VarianceFind the variance of a list of numbers, the average squared distance of each value from the mean.60 Cube Number CalculatorCube a number: multiply it by itself three times.61 Difference of Two Numbers CalculatorSubtract the second number from the first.62 Double a Number CalculatorDouble any number.63 Exponent CalculatorRaise a base to a power.64 Product of Two Numbers CalculatorMultiply two numbers together.65 Quotient of Two Numbers CalculatorDivide the first number by the second.66 Square Number CalculatorSquare a number: multiply it by itself.67 Sum of Two Numbers CalculatorAdd two numbers together.68 Triple a Number CalculatorMultiply a number by three.69 Half a Number CalculatorHalve any number.70 Ten Percent CalculatorFind ten percent of a number.71 Five Percent CalculatorFind five percent of a number.72 Twenty Percent CalculatorFind twenty percent of a number.73 Reciprocal CalculatorFind the reciprocal of a number.74 Absolute Difference CalculatorFind absolute difference of two numbers.75 Maximum of Two Numbers CalculatorFind the larger of two numbers.76 Minimum of Two Numbers CalculatorFind the smaller of two numbers.77 Range of Two Numbers CalculatorFind range as max minus min.78 Math Addition CalculatorFind math addition from two numbers.79 Math Subtraction CalculatorFind math subtraction from two numbers.80 Math Multiplication CalculatorFind math multiplication from two numbers.81 Math Division CalculatorFind math division from two numbers.82 Math Square Calculator 2Find math square from a number.83 Math Cube Calculator 2Find math cube from a number.84 Math Median Calculator 2Find math median from two middle numbers.85 Math Range Calculator 2Find math range from max and min.86 Math Percent Calculator 2Find math percent from part and whole.87 Math Geometry CalculatorFind math geometry area from base and height.88 Math Trigonometry CalculatorFind math trigonometry value from angle and hypotenuse.89 Math Statistics CalculatorFind math statistics sum from numbers and count.90 Math Probability Calculator 2Find math probability percent from favourable and total.91 Math Ratio Calculator 2Find math ratio value from part and whole.92 Math Decimal CalculatorFind math decimal from fraction numerator and denominator.93 Math Exponent Calculator 2Find math exponent value from base and exponent.94 Final Math CalculatorFind final math result from two numbers and multiplier.95 Extra Math CalculatorFind extra math product from three numbers.96 Last Math CalculatorFind last math total from two numbers.97 Math Sum CalculatorFind math sum of two numbers.98 Math Difference CalculatorFind math difference of two numbers.99 Math Product CalculatorFind math product of two numbers.100 Math Quotient CalculatorFind math quotient of two numbers.101 Math Addition CalculatorFind math addition of three numbers.102 Math Subtraction CalculatorFind math subtraction from total and part.103 Math Multiplication CalculatorFind math multiplication of three numbers.104 Math Division CalculatorFind math division of total by parts.105 Math Square CalculatorFind math square of a number.106 Math Cube CalculatorFind math cube of a number.107 Math Double CalculatorFind math double of a number.108 Math Half CalculatorFind math half of a number.109 Math Range CalculatorFind math range from max and min.110 Math Median CalculatorFind math median of two middle numbers.111 Math Mode CalculatorFind math mode total from value and count.112 Math Factor CalculatorFind math factor total from number and factor.113 Math Multiple CalculatorFind math multiple of a number.114 Math Divisor CalculatorFind math divisor result from total and divisor.115 Math Power CalculatorFind math power of two.

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116 Math Number GeneratorGenerate a random number string.
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117 Sum Calculator 2Find sum of two numbers.118 Difference Calculator 2Find difference of two numbers.119 Product CalculatorFind product of two numbers.120 Quotient CalculatorFind quotient of two numbers.121 Cube CalculatorFind cube of a number.122 Factorial Calculator 2Find factorial of 5.123 GCD Calculator 2Find GCD of 12 and 18.124 LCM Calculator 2Find LCM of 4 and 6.125 Prime Check CalculatorFind prime check for 7.126 Even Odd CalculatorFind even or odd for a number, 1 for even.