Math Calculators
Free online math calculators and tools. No sign-up, no fees — just instant results.
Percentage Calculator
beginnerCalculate percentages instantly: what is P% of V, X is what % of Y, and X is P% of what. The fastest way to solve any percentage problem.
Age Calculator
beginnerCalculate your exact age in years, months, and days. Also shows total months, weeks, and days between two dates — perfect for birthdays and anniversaries.
Unit Converter
beginnerConvert units across length, weight, temperature, volume, area, time, speed, and digital storage. Fast, accurate conversions with live results.
Fraction Calculator
beginnerAdd, subtract, multiply, and divide fractions, then simplify to lowest terms. Get both the reduced fraction and its decimal value instantly.
Quadratic Equation Solver
intermediateSolve any quadratic equation ax² + bx + c = 0. Shows the discriminant, root nature, and real or complex roots via the quadratic formula.
Combination & Permutation Calculator
beginnerCompute combinations (nCr) and permutations (nPr) for any n and r. Perfect for probability, statistics, and combinatorics problems.
Pythagorean Theorem Calculator
beginnerFind the missing side of a right triangle with a² + b² = c². Solve for the hypotenuse or a leg in seconds.
Scientific Calculator
beginnerA full scientific calculator with arithmetic, powers, roots, percentages, parentheses, and trigonometry (sin, cos, tan, ln, log). Switch between degrees and radians.