Math & Statistics

Count significant figures in a number and round to a chosen number of sig figs.

Measure how far a measured value is from the true value, as a percentage.

Convert numbers between standard decimal form and scientific (and E) notation.

Evaluate expressions with sin, cos, log, ln, sqrt, π and e.

Basic arithmetic for two numbers: add, subtract, multiply, divide.

Add, subtract, multiply and divide fractions with auto-simplification.

Solve ax² + bx + c = 0 with the quadratic formula and discriminant.

Solve ax + b = 0 with full edge cases.

Solve a 2-variable system using Cramer's rule.

Arithmetic mean (average) of a list of numbers.

Middle value of a sorted data set.

Most frequent value(s) in a dataset.

Sample or population standard deviation with mean and variance.

Sample or population variance from a data set.

Range (max − min) of a numeric data set.

Probability, complement and odds for any event.

P(n, r) = n! / (n − r)! for ordered arrangements.

C(n, r) = n! / (r!(n − r)!) for unordered selections.

n! for any non-negative integer up to 170.

Greatest Common Divisor of any list of integers.

Least Common Multiple of any list of integers.

Check whether a number is prime and show its smallest divisor.

Decompose any integer into its prime factors.

√n for any real number, including imaginary results.

Cube root ∛n for positive and negative numbers.

Compute aⁿ with positive, negative and fractional exponents.

log_b(x) for any base — common, natural or custom.

Add two matrices element-wise.

Multiply two compatible matrices.

Determinant of any square matrix via Gaussian elimination.

Best fit line y = mx + b with slope, intercept and R².

Pearson r with strength interpretation and R².

Standardize a value: z = (x − μ) / σ.

Find the k-th percentile of any data set.