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Math & Algebra

Percentages, fractions, roots, equations and the scientific keypad.

√144 × 2.5= 30

15% of 240= 36

3/4 + 5/6= 19/12

789÷sin456×√123−xʸ
%PercentageFind a percentage of a number, what percent one number is of another, or the percentage change between two.Top 100 · #1½FractionAdd, subtract, multiply and divide fractions and mixed numbers, simplified.Top 100 · #9sinScientificA full scientific calculator: trigonometry, logs, powers, roots and factorials, typed or tapped.Top 100 · #8√Square RootThe square root of a number, simplified radical form, and any nth root.Top 100 · #46xⁿExponentRaise a number to any power, including negative and fractional exponents, or solve for the exponent.Top 100 · #49logLogarithmLogarithms in any base: common (10), natural (e), binary (2) or your own.Top 100 · #50x²QuadraticSolve ax² + bx + c = 0: real or complex roots, the vertex and the discriminant, with the parabola drawn.Top 100 · #51n!Factorialn! exactly, every digit, for whole numbers up to 1000.Top 100 · #52a:bRatioSimplify a ratio, scale it, or solve A : B = C : D for the missing value.Top 100 · #48x̄AverageThe mean, median, mode and range of a list of numbers.Top 100 · #47PPrime NumberIs it prime? If not, its smallest factor, and the primes just before and after it.Top 100 · #53p·qPrime FactorsBreak a whole number into its prime factors, with exponents and every divisor.MathgcfGCFThe greatest common factor (GCD) of two or more whole numbers, by Euclid's algorithm.MathlcmLCMThe least common multiple of two or more whole numbers.MathmodModuloThe remainder of a division, both as most programming languages give it and as mathematicians define it.Math|x|Absolute ValueThe absolute value of a number or expression, and the distance between two numbers.Math÷Long DivisionDivide step by step as on paper: quotient, remainder and every bring-down.Math≈RoundingRound to decimal places or to the nearest 10, 100 or any step, with the rounding rule you need.Top 100 · #5710ⁿSci NotationConvert between ordinary numbers and scientific or engineering notation.Top 100 · #58sfSig FigsCount the significant figures in a number, or round a number to a chosen number of them.MathmSlopeThe slope, angle, distance and equation of the line through two points.Top 100 · #54a²PythagoreanFind the missing side of a right triangle, with its angles, area and perimeter.Top 100 · #55θTrigonometryAll six trig functions of an angle, or the angle from a ratio, in degrees or radians.Top 100 · #56⅟Complex FractionSimplify a fraction whose top and bottom are themselves fractions: (a/b) ÷ (c/d).Math=xEquation SolverSolve an equation in x, linear, polynomial or with functions, for every real solution in range.Math