Mathematics Calculators

Calculate the required sample size for ab tests to achieve statistical significance with a given power and expected effect size. Ideal for marketing and product experiments.

An eigenvalue and eigenvector calculator that computes eigenvalues and their corresponding eigenvectors for any square matrix with clear results.

Easily calculate screen or image dimensions with this aspect ratio calculator. Determine missing width or height while preserving your desired ratio.

Solve quadratic equations of the form ax² + bx + c = 0 with our Quadratic Formula Calculator. Easily find the roots of any quadratic equation by inputting the coefficients a, b, and c.

Calculate percentage change easily. Determine the increase or decrease between two values with this intuitive percentage change calculator.

Calculate the centroid of any triangle by inputting the coordinates of its three vertices. Find the geometric center easily and accurately.

Calculate the volume of a sphere with ease using our online calculator. Simply input the radius to find the sphere's volume.

Find the area of any triangle using Heron's formula. Perfect for geometry and trigonometry calculations.

Easily calculate the slope of a line given two points. Understand linear equations and graph analysis.

Calculate simple interest on loans and investments quickly. Manage your finances effectively.

Calculate the golden ratio and its applications in art, architecture, and nature. Find beauty in mathematical proportions.