Mathematics
Percentages, geometry and statistics, step by step.
The calculators
Area of a circle
Calculate the area of a disk from its radius.
MathematicsArea of a rectangle
Calculate the area and perimeter of a rectangle.
MathematicsArea of a triangle
Calculate the area of a triangle using a base and its perpendicular height.
MathematicsAdd a percentage
Increase a value by the specified percentage.
MathematicsPercentage calculator
Find a specified percentage of a number.
MathematicsCircumference of a circle
Calculate the distance around a circle.
MathematicsPopulation standard deviation
Measure dispersion in the same units as the original values.
MathematicsLinear equation
Solve an equation of the form ax + b = 0.
MathematicsQuadratic equation
Solve ax² + bx + c = 0 over the real numbers.
MathematicsStatistical range
Calculate the difference between the largest and smallest values.
MathematicsLogarithm
Calculate a logarithm in your chosen base.
MathematicsMedian
Find the middle value of a sorted series.
MathematicsArithmetic mean
Calculate the average of a series of numbers.
MathematicsPercentage of a total
Express part of a total as a percentage.
MathematicsGreatest common divisor
Find the greatest common divisor of two integers.
MathematicsLeast common multiple
Find the least common multiple of two integers.
MathematicsExponentiation
Raise a base to an exponent.
MathematicsSquare root
Find the nonnegative square root of a number.
MathematicsCube root
Find the cube root of a positive or negative number.
MathematicsProportions
Find a missing value in a proportion using three known values.
MathematicsSimplify a fraction
Reduce a fraction to its simplest form.
MathematicsSum of a series
Quickly add several positive or negative numbers.
MathematicsPythagorean theorem
Find the hypotenuse of a right triangle.
MathematicsValue before an increase
Find the original value before a known percentage increase.
MathematicsPopulation variance
Calculate the dispersion of a series by dividing by the total number of values.
MathematicsPercentage change
Measure an increase or decrease relative to the initial value.
MathematicsVolume of a cube
Calculate the volume and total surface area of a cube.
MathematicsVolume of a cylinder
Calculate the volume of a right circular cylinder.
MathematicsVolume of a rectangular prism
Calculate the volume of a rectangular solid.
MathematicsVolume of a sphere
Calculate the volume of a sphere from its radius.
MathematicsNo tools to display
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