Core Math calculators

Trig, logs, exponents, roots and memory — degrees or radians.

Add, subtract, multiply and divide fractions with mixed numbers.

Divide two whole numbers step by step with the classic bring-down layout, with optional decimal quotient.

Percent of a number, percent change, and what percent one is of another.

Raise any number to a power — integer, negative or fractional.

Solve log_b(x) = y for any missing value — supports base 10, e (ln) and any base.

Simplify ratios and solve for a missing value in a proportion.

Square, cube and nth roots of any real number.

Round to decimal places or significant figures with the rule shown.

Solve ax² + bx + c = 0 — real, repeated or complex roots.

Add, subtract, multiply and divide polynomials with step-by-step working.

Solve two linear equations in two unknowns with elimination and step-by-step working.

Least common multiple of two or more whole numbers.

Greatest common factor of two or more whole numbers.

List every factor, factor pairs, prime factorization and a visual factor tree.

Generate random integers or decimals between any two limits.

Add, subtract, multiply, divide binary numbers and convert to/from decimal.

Add, subtract, multiply, divide hex values and convert to/from decimal.

Convert between binary, octal, decimal and hexadecimal in one step.

Compare a measured value to a true value and get the percent error.

Convert numbers to scientific notation and compute with them.

Solve exponential decay for half-life, mean lifetime or decay constant.

Arbitrary-precision arithmetic on huge integers, decimals and E-notation values.

Add, subtract, multiply, transpose, power, determinant and inverse of matrices up to 6×6.

Check if a number is prime and list all primes in any range.

Compute a mod b with quotient, remainder and sign convention explained.

Simplify square roots and nth roots into exact radical form using prime factorization.

Add, subtract, multiply and divide complex numbers with modulus, argument and steps.

Solve linear inequalities in x with step-by-step working, interval form and a number-line visual.

Add, subtract, dot and cross product for 2D and 3D vectors, with magnitude and full steps.

Union, intersection, difference and symmetric difference of two sets with a Venn diagram.

Differentiate a polynomial in x term by term using the power rule, with full steps and optional evaluation at a point.

Arithmetic and geometric sequences — nth term, sum of the first n terms, and sum to infinity when it converges.

Solve |mx + b| = c by splitting into two cases, with steps and a number-line visual of the two solutions.

Sin, cos and tan of any angle in degrees or radians — with exact radical values, a labelled unit circle diagram and a reference table.

Count arrangements with the right formula — permutations, combinations, with or without repetition — from n items into r slots.

Estimate an unknown y value between two known points using linear interpolation, with slope steps and a visual of the line and target point.

Find the equation of a line through two points in slope-intercept form y = mx + b, plus point-slope and standard form, with a graph and full working.

Find the distance between two numbers on a number line using |a − b| — accepts integers, decimals and fractions, with a visual number line.

Find the reciprocal of a number, fraction or matrix — with step-by-step working and the determinant/adjugate method for 2×2 and 3×3 matrices.

Compute nPr and nCr side by side with the formula substituted, plus an optional 'allow repetition' toggle for n^r and (n+r−1)Cr.