Math Calculators

Percentages, fractions, equations and geometry. · ۲۳ tools

Fraction CalculatorAdd, subtract, multiply, divide and raise fractions and mixed numbers exactly, with simplification steps and decimal conversions.Percentage CalculatorWork out X% of a number, what percent one value is of another, percentage change, increases, decreases and differences.Quadratic Equation SolverSolve ax² + bx + c = 0 step by step: discriminant, real or complex roots, exact surd form, vertex, factored form and graph.Scientific CalculatorA full scientific calculator with trigonometry in degrees or radians, logs, powers, factorials, variables, unit conversion and history.Area CalculatorFind the area and perimeter of squares, rectangles, circles, triangles, trapezoids, parallelograms, ellipses and circular sectors.Binary CalculatorConvert a number between binary, decimal, hexadecimal and octal, or perform binary arithmetic and bitwise AND, OR, XOR, NOT and shifts.Exponent CalculatorRaise any number to any power, with exact integer results of thousands of digits, negative and fractional exponents.Factorial CalculatorCalculate exact factorials up to 25,000!, double factorials and subfactorials, with digit count, trailing zeros and Stirling’s estimate.LCM and GCD CalculatorFind the LCM and GCD (HCF) of two or more numbers of any size, with prime factorisations and Euclidean algorithm steps.Logarithm CalculatorCalculate log base 10, natural log, log base 2 or any custom base, plus antilogs and the unknown base of a logarithm.Matrix CalculatorAdd, multiply, invert and row-reduce matrices exactly with fractions; find determinants, rank, powers and solve linear systems with steps.Percentage Error CalculatorCalculate percentage error between an experimental and a theoretical value, plus absolute error and the symmetric percentage difference.Permutation and Combination CalculatorCalculate nPr permutations, nCr combinations, and their repetition variants (n^r and (n+r−1)Cr), with the factorial working shown.Prime Number CheckerCheck whether numbers of up to 400 digits are prime, factorise composites, find neighbouring primes and list primes in a range.Probability CalculatorCalculate single-event probability, combined event probability (AND/OR) for independent or mutually exclusive events, and the complement rule.Pythagorean Theorem CalculatorSolve for a missing side of a right triangle using a² + b² = c², or check whether three sides form a right angle.Ratio CalculatorSimplify ratios, solve proportions A:B = C:x, scale a ratio to a new size and split a total into parts.Root CalculatorCalculate square roots, cube roots and any nth root, with simplified radical form and a check of the answer.Rounding CalculatorRound a number to N decimal places or a nearest unit, comparing round-half-up, round-half-down and round-half-to-even side by side.Scientific Notation ConverterConvert a standard decimal number into scientific notation (a × 10ⁿ) and back, with the decimal-point shift explained step by step.Significant Figures CalculatorCount the significant figures in a number exactly as written, or round any number to a chosen number of significant figures.Triangle SolverSolve any triangle’s remaining sides, angles, area and perimeter from SSS, SAS or ASA inputs using the law of cosines and sines.Volume CalculatorCalculate the volume and surface area of cubes, boxes, spheres, cylinders, cones and square pyramids.

From quick percentages to quadratic equations and matrices, these math calculators show the result and, where it helps, the working steps, which makes them useful for homework, exams and professional work.

Calculations use exact or high-precision arithmetic where possible to avoid the rounding surprises of ordinary floating-point maths.

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