Calculators
Math, percentages, geometry and statistics.
17 tools
Angle converterDegrees, radians, gradians and full turns.Percentage calculatorEvery percentage question in one place: share, total, change and increase.Mean, median and standard deviationPaste a series of numbers and get every statistic at once.Weighted averageAverage values that carry different weights — grades, ratings, coefficients.Fraction calculatorAdd, subtract, multiply or divide two fractions, simplified automatically.GCD and LCMGreatest common divisor, least common multiple and prime factorisation.Quadratic equationSolve ax² + bx + c = 0: discriminant, roots and vertex of the parabola.Triangle calculatorPythagoras, area, perimeter and angles from three sides or two sides of a right triangle.Circle calculatorRadius, diameter, circumference and area — give one, get the rest.Volume and surface of a solidCube, box, cylinder, sphere, cone and pyramid: volume, surface and capacity in litres.Combinations and permutationsHow many draws, arrangements or orderings are possible? With or without repetition.Ratio & proportion calculatorSolve a cross-multiplication, simplify a ratio or split a total.Power, root and logarithmRaise to a power, take an nth root or compute a logarithm.Number base converterBinary, octal, decimal, hexadecimal and any base from 2 to 36.Scale calculatorConvert between drawing distance and real distance (models, maps, blueprints).Probability calculatorProbability of an event, of repeating it, and the expected count over several tries.Round a numberRound, truncate, floor, ceiling and round to the nearest multiple.