🧮 Math Calculators
Algebra, geometry, statistics & more — 11 free tools, no signup required.
Scientific Calculator
Free advanced online scientific calculator. Perform trigonometric, logarithmic, exponential, and algebraic calculations with degrees/radians, history…
Percentage Calculator
Free online percentage calculator with 3 modes: find what percent of a number, what percentage one number is of another, and percentage change…
Area Calculator
Free area calculator — area of a rectangle, square, circle, triangle, trapezoid, parallelogram, ellipse or sector, with conversions to square feet, acres and hectares.
Volume Calculator
Free volume calculator — volume of a cube, box, cylinder, sphere, cone, pyramid or hemisphere, with conversions to liters, cubic feet and US gallons.
Fraction Calculator
Free online fraction calculator. Add, subtract, multiply, and divide standard fractions or mixed numbers with detailed step-by-step algebraic…
Quadratic Equation Solver
Free online quadratic equation solver. Solve any quadratic equation of the form ax² + bx + c = 0. Handles real & complex roots, with complete…
Statistics Calculator
Free online statistics calculator. Input data to calculate Mean, Median, Mode, Range, Variance, and Standard Deviation with dynamic step-by-step…
Triangle Calculator
Free advanced online triangle calculator. Solve triangles using SSS, SAS, ASA, AAS, or SSA configurations. Computes area, perimeter, angles, and…
Random Number Generator
Free online random number generator and raffle picker. Generate random integers without duplicates, sort results, and run interactive name draws with…
Scientific Notation Calculator
Free online scientific notation calculator. Convert numbers to scientific & engineering notation, count significant figures, and perform arithmetic…
Tape Calculator
Free online tape calculator. Keep track of calculations with a scrollable audit tape. Add notes, adjust taxes, split totals, copy and print your…