Fast Math, Percentage & Geometry Calculators

Find X percent of any number.

Increase or decrease between two values.

Mean, median, and sum of a list of numbers.

Hypotenuse and area of a right triangle.

Area, circumference, and diameter from the radius.

Area, perimeter, and diagonal of a rectangle.

Real roots of ax² + bx + c = 0.

Greatest common divisor and least common multiple.

Mean, variance, and standard deviation of a data set.

Solve a : b = c : x.

Area and perimeter from three side lengths.

Count ways to choose or arrange items.

Median, mode, range, and sum of a list of numbers.

Volume and surface area from the radius.

Percent difference between two values, regardless of order.

Check if a number is prime and find the next prime.

Nth term and sum of an arithmetic sequence.

Calculate n! with digit count and trailing zeros.

Count arrangements and selections of r items from n.

Distance, slope, midpoint, and line equation from two points.

Reduce a ratio of two whole numbers to its simplest form.

Log of any number in any base, plus ln, log10, and log2.

Add, subtract, multiply, or divide two fractions.

Find how many standard deviations a value is from the mean.

Find square roots, cube roots, and any other root.

Volume and surface area for a cylinder and a cone of the same size.