Math

Calculate and convert image/video aspect ratios. Find dimensions for 16:9, 4:3, 21:9 and custom ratios. Free online aspect ratio calculator

Calculate permutations, combinations, factorial, binomial coefficients. Probability distributions calculator. Free online combinatorics tool

Calculate with complex numbers: addition, multiplication, division, polar form, conjugate. Visualize on Argand diagram. Free complex number calculator

Solve linear, quadratic, cubic equations and systems of equations online. Step-by-step solutions with graphing. Free math equation solver calculator

Calculate area, perimeter, volume of 2D and 3D shapes. Circle, triangle, rectangle, sphere, cube formulas. Free online geometry calculator with diagrams

Plot mathematical functions and equations. Create line, scatter, parametric graphs. Free online graphing calculator and function visualizer

Perform matrix operations: addition, multiplication, inverse, determinant, transpose, eigenvalues. Free online linear algebra matrix calculator

Calculate percentages, percentage increase/decrease, find X% of Y, what percent is X of Y. Free online percentage calculator with formulas

Calculate mean, median, mode, standard deviation, variance and more. Statistical analysis with histograms and charts. Free online statistics calculator