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Quadratic Equation SolverSolve ax2 + bx + c = 0 with steps.Linear Equation SolverSolve ax + b = c for x.System of Equations Solver (2x2)Solve two linear equations with two unknowns.GCD Calculator (HCF)Greatest common divisor of two or more numbers.LCM CalculatorLeast common multiple of two or more numbers.Prime Number CheckerCheck whether a number is prime.Prime Factorization CalculatorBreak a number into its prime factors.Prime Number GeneratorList all prime numbers up to a limit.Factorial CalculatorCalculate n! for any whole number up to 2000.Fibonacci CalculatorFind the nth Fibonacci number and the sequence.Permutation Calculator (nPr)Number of ordered arrangements.Combination Calculator (nCr)Number of ways to choose items without order.Percentage Change CalculatorPercent increase or decrease between two values.Percentage Difference CalculatorPercent difference between two numbers.Percent Error CalculatorPercent error between measured and true value.Ratio SimplifierReduce a ratio to its simplest form.Proportion CalculatorSolve a : b = c : x.Fraction SimplifierReduce a fraction to lowest terms.Fraction CalculatorAdd, subtract, multiply and divide fractions.Decimal to Fraction ConverterTurn a decimal into a simplified fraction.Fraction to Decimal ConverterTurn a fraction into a decimal and percent.Square Root CalculatorSquare root and square of a number.Cube Root CalculatorCube root and cube of a number.Nth Root CalculatorCalculate any root of a number.Exponent CalculatorRaise a number to any power.Logarithm CalculatorLog base 10, natural log and any base.Scientific Notation ConverterConvert numbers to and from scientific notation.Standard Deviation CalculatorPopulation and sample standard deviation.Variance CalculatorPopulation and sample variance.Median CalculatorMedian, range and quartiles of a data set.Mode CalculatorMost frequent value(s) in a list.Z-Score CalculatorZ-score of a value in a distribution.Probability CalculatorProbability of one or two events.Circle CalculatorArea, circumference and diameter of a circle.Triangle Area CalculatorArea from base and height.Triangle Calculator (3 sides)Area, perimeter and angles from three sides.Rectangle CalculatorArea, perimeter and diagonal.Square CalculatorArea, perimeter and diagonal of a square.Trapezoid Area CalculatorArea of a trapezoid.Parallelogram Area CalculatorArea of a parallelogram.Regular Polygon CalculatorArea and angles of a regular polygon.Sphere CalculatorVolume and surface area of a sphere.Cylinder CalculatorVolume and surface area of a cylinder.Cone CalculatorVolume and surface area of a cone.Cube CalculatorVolume and surface area of a cube.Pythagorean Theorem CalculatorFind the missing side of a right triangle.Distance Between Two PointsDistance and midpoint between two points.Slope CalculatorSlope, angle and line equation through two points.Arithmetic Sequence Calculatornth term and sum of an arithmetic sequence.Geometric Sequence Calculatornth term and sum of a geometric sequence.Matrix Determinant CalculatorDeterminant of a 2x2 or 3x3 matrix.Rounding CalculatorRound to decimals, tens, hundreds and more.Even or Odd Number CheckerCheck if a number is even or odd.Perfect Square CheckerCheck whether a number is a perfect square or cube.Multiplication Table GeneratorPrint the multiplication table of any number.Modulo CalculatorRemainder and quotient of a division.Sum CalculatorAdd up a list of numbers.Average Speed CalculatorSpeed, distance or time from the other two values.Sine, Cosine and Tangent CalculatorTrigonometric functions of an angle.Degrees Minutes Seconds ConverterConvert decimal degrees to DMS and back.Weighted Grade CalculatorFinal grade from scores and weights (one "score, weight%" per line).GPA CalculatorGPA from grade points and credits (one "points, credits" per line).CGPA to Percentage CalculatorConvert CGPA to percentage (CBSE 9.5 and 10-point scales).Marks Percentage CalculatorPercentage from obtained and total marks.