Math & Statistics
Averages, geometry, equations and probability with the working shown.
Mean/Median/Mode
Find the mean, median, mode and range of a list of numbers.
Open calculatorStd Deviation
Calculate the variance and standard deviation of a list of numbers.
Open calculatorRatio
Simplify a ratio and scale it to a new total or missing value.
Open calculatorFraction
Add, subtract, multiply or divide two fractions and simplify the result.
Open calculatorPrime Check
Check whether a number is prime and see its prime factors if not.
Open calculatorFactors
List every factor of a number and check if it is a perfect square.
Open calculatorLCM & GCD
Find the least common multiple and greatest common divisor of two numbers.
Open calculatorQuadratic
Solve ax² + bx + c = 0 for its real or complex roots.
Open calculatorLinear Equation
Solve ax + b = c for x, and find the slope and intercept of a line.
Open calculatorMatrix Determinant
Find the determinant of a 3x3 matrix.
Open calculatorVector
Find the magnitude, dot product and cross product of two 3D vectors.
Open calculatorCircle
Find the area, circumference and diameter of a circle from its radius.
Open calculatorTriangle
Find the area and perimeter of a triangle from its base, height and three sides.
Open calculatorRectangle/Square
Find the area, perimeter and diagonal of a rectangle or square.
Open calculatorTrapezium/Polygon
Find the area of a trapezium, and the area and angles of a regular polygon.
Open calculatorVolume
Find the volume of a cube, box, sphere, cylinder or cone.
Open calculatorRandom Number
Generate a repeatable list of random numbers between a minimum and maximum using a seed.
Open calculatorPerm/Combo
Calculate the number of permutations (order matters) or combinations (order doesn't) from n items chosen r at a time.
Open calculatorProbability
Calculate the probability of a single event, and combined 'and'/'or' probabilities for two events.
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