Math Calculators

Percentage Calculator

Find what percentage one number is of another, or calculate percentage change.

Percentage Change Calculator

Calculate the percentage increase or decrease between two values.

Quadratic Equation Solver

Solve ax² + bx + c = 0 for real roots using the quadratic formula.

Average (Mean) Calculator

Calculate the average of up to 10 numbers.

Standard Deviation Calculator

Calculate the population standard deviation of up to 5 numbers.

Circle Area & Circumference Calculator

Calculate the area, circumference, and diameter of a circle from its radius.

Triangle Area Calculator

Calculate a triangle's area from three side lengths using Heron's formula.

Pythagorean Theorem Calculator

Calculate the hypotenuse or a leg of a right triangle.

GCD & LCM Calculator

Find the greatest common divisor and least common multiple of two numbers.

Permutation & Combination Calculator

Calculate nPr (permutations) and nCr (combinations).

Slope Calculator

Calculate the slope between two points on a line.

Distance Formula Calculator

Calculate the distance between two points on a coordinate plane.

Exponent Calculator

Calculate the result of raising a base number to an exponent.

Logarithm Calculator

Calculate the logarithm of a number in any base.

Nth Root Calculator

Calculate the nth root of any positive number.

Ratio Calculator

Simplify a ratio and find an equivalent value for a given part.

Factorial Calculator

Calculate the factorial of a non-negative integer.

Sphere Volume Calculator

Calculate the volume and surface area of a sphere from its radius.

Cylinder Volume Calculator

Calculate the volume and surface area of a cylinder.

Cone Volume Calculator

Calculate the volume of a cone from its radius and height.

Rectangle Area & Perimeter Calculator

Calculate the area, perimeter, and diagonal of a rectangle.

Trapezoid Area Calculator

Calculate the area of a trapezoid from its parallel sides and height.

Arithmetic Sequence Calculator

Find the nth term and sum of an arithmetic sequence.

Geometric Sequence Calculator

Find the nth term and sum of a geometric sequence.

Z-Score Calculator

Calculate the z-score (standard score) of a value in a normal distribution.

Midpoint Calculator

Calculate the midpoint between two coordinate points.

Vector Magnitude Calculator

Calculate the magnitude (length) of a 3D vector.

Dot Product Calculator

Calculate the dot product of two 3D vectors.

Statistical Range Calculator

Calculate the range of a data set from its maximum and minimum values.

Coefficient of Variation Calculator

Calculate the coefficient of variation to compare relative variability between data sets.

Harmonic Mean Calculator

Calculate the harmonic mean of a set of numbers.

Absolute Value Calculator

Calculate the absolute value of any number.

Reciprocal Calculator

Calculate the reciprocal (multiplicative inverse) of a number.

Percentage Point Difference Calculator

Calculate the difference in percentage points between two percentages.

Weighted Average Calculator

Calculate a weighted average from up to three values and their weights.

Fibonacci Sequence Calculator

Find the nth number in the Fibonacci sequence.

Cube Volume & Surface Area Calculator

Calculate the volume and surface area of a cube from its side length.

Parallelogram Area Calculator

Calculate the area of a parallelogram from base and height.

Slope-Intercept Form Calculator

Find the slope-intercept equation (y = mx + b) of a line from two points.

Quadratic Vertex Calculator

Find the vertex (turning point) of a quadratic function ax² + bx + c.

Sum of Consecutive Integers Calculator

Calculate the sum of all integers from 1 (or any start) to n.

Regular Polygon Interior Angle Calculator

Calculate the interior and exterior angles of any regular polygon.

Combinations With Repetition Calculator

Calculate the number of combinations when repeated selections are allowed.