Math & Education Calculators
Algebra, geometry, statistics and school math.
Calculate percentages, percentage of, and percentage change.
Add, subtract, multiply and divide fractions. Simplifies to lowest terms and shows mixed-number results.
Free online scientific calculator with trig functions, logarithms, powers, roots and constants. No signup, instant results.
Solve ax² + bx + c = 0 for x. Get real or complex roots plus discriminant and vertex details.
Distance between two points in 2D. Uses the Euclidean formula for coordinate geometry problems.
Free slope calculator: find the slope of a line from two points, plus rise over run, angle, distance and the y = mx + b equation.
Area of common shapes. Circles, rectangles, triangles, trapezoids and more in one place.
Volume of common 3D shapes. Cubes, spheres, cylinders, cones and pyramids with clear formulas.
Find hypotenuse from two legs. Or solve for a missing leg given the hypotenuse and the other leg.
Sample standard deviation of a list of numbers. Measure spread with sample and population variants side by side.
Compute mean, median and mode of a list. Compare central tendencies to describe a dataset quickly.
Basic probability of independent events. Compute AND/OR outcomes and conditional probability with clear steps.
Number of ordered arrangements P(n,r). Count distinct orderings for lineups, passwords and schedules.
Number of unordered selections C(n,r). Handles binary and decimal units used by OSes and cloud vendors.
Weighted Grade Point Average. Supports unweighted and weighted scales for high school and college.
Free grade calculator — compute weighted class grade from assignments, tests and exams, plus the score you need on the final to reach a target grade.