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Math & Statistics Calculators

Explore datasets, spread, counting methods, and exact integer arithmetic with transparent mathematical conventions.

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Search by name or topic. 22 calculators available.

Circle

Derive circle area, radius, diameter, and circumference from one selected known measurement.

Combination

Count unordered selections without replacement and retain exact digits for large results.

Cylinder Volume

Calculate a right circular cylinder’s capacity and closed surface area from radius and height.

Distance Formula

Measure straight-line Euclidean distance between two points in a plane.

GCF/GCD

Find the greatest common factor or divisor shared by signed whole numbers, preserving exact digits.

LCM

Find the least common multiple of a bounded list of signed whole numbers with exact integer arithmetic.

Median

Find the middle of a numeric dataset, including the average of the two middle values when its count is even.

Midpoint

Locate the point halfway between two entered coordinate pairs.

Mode

Find the most frequent number, all tied modes, or an explicit no-repeated-mode result.

Percent Error

Measure absolute relative error against an accepted reference, including negative nonzero references.

Permutation

Count ordered selections of distinct items without replacement using exact whole-number arithmetic.

Probability

Calculate an event probability and its complement from counts of equally likely outcomes.

Pythagorean Theorem

Solve either the hypotenuse or one missing leg of a right triangle with explicit side units.

Quadratic Formula

Solve a quadratic with stable real-root arithmetic and explicit repeated or complex-root results.

Range

Measure the distance between the smallest and largest observations and inspect both endpoints.

Scientific Notation

Convert decimal or e notation into normalized scientific notation and an exact ordinary decimal string.

Slope

Find the slope and vertical intercept of the line through two distinct coordinate points.

Sphere

Find the volume and curved surface area of an ideal sphere from its radius.

Standard Deviation

Calculate population or sample standard deviation with the selected denominator shown in the result.

Triangle

Calculate area, perimeter, and altitude from three sides that form a valid triangle.

Variance

Measure squared spread around the mean using a population or sample denominator.

Weighted Average

Combine values with explicit nonnegative weights, including weights that do not add to 100.