Math calculators

Multiply two 2x2 matrices.

Distance from zero, and |ax+b| equations.

Length of a circular arc.

nth term and sum of an arithmetic series.

Vertical and horizontal asymptotes of P(x)/Q(x).

Binary, decimal, hex and octal in one step.

Area, circumference and diameter from any one value.

Centre, radius, standard and general form of any circle.

nCr, nPr and factorials for counting problems.

Turn ax² + bx + c into a(x − h)² + k with every step.

Add, subtract, multiply and divide two complex numbers.

Evaluate f(g(x)) for two linear functions.

Vector cross product in 3D.

Cube root of any number.

Exact definite integral of a cubic polynomial.

Differentiate a polynomial term by term.

2×2 and 3×3 matrix determinants.

b² − 4ac tells you how many roots a quadratic has.

Distance and midpoint between two coordinates.

Domain restrictions for sqrt and rational expressions.

Scalar product and angle between vectors.

Area, perimeter and foci of an ellipse.

Powers, roots, scientific notation and logs in one place.

n! and related combinatorics.

Fibonacci terms and the golden ratio.

Add, subtract, multiply and divide fractions with full working.

Convert fractions to decimals and percentages, both ways.

Greatest common factor and least common multiple, with prime factors.

Average growth rate across multiple periods.

nth term and sum of a geometric series.

Plot any function instantly, with roots, extrema and a value table.

Center, vertices, foci, eccentricity and asymptotes from a, b and the center.

Find the inverse of y = mx+b.

Solve triangles with two sides and an angle.

Solve triangles from angles and a side.

Numerically estimate the limit of a rational function.

log base 10, natural log and any custom base at once.

Invert a 2×2 matrix and solve the linear system.

Midpoint between two coordinates.

Remainder after division.

Compute ln(x) and its inverse e^x.

One Newton step at a time, with convergence check.

Focus, directrix, vertex and latus rectum of a parabola.

Numeric partial derivatives of multivariable functions at a point, including gradients.

Split a fraction over (x-p)(x-q) into two simple fractions.

Experimental accuracy against a true value.

Percent of a number, percent change and 'X is what % of Y'.

Increase, decrease and percentage-point difference.

Ordered arrangements nPr.

Evaluate and graph piecewise-defined functions, and test continuity at a point.

y − y₁ = m(x − x₁), converted to every other form.

Divide a cubic by (x - r) with quotient and remainder.

Break any number into its prime building blocks.

Solve for any missing side of a right triangle.

Roots, vertex and discriminant for ax² + bx + c.

Convert an angle from radians to degrees.

Simplify square and nth roots to exact radical form, with the decimal value.

Random integers in any range, with or without repeats.

Simplify ratios, scale them and solve for a missing term.

Area, perimeter and diagonal.

Reference angle, quadrant and exact trig signs.

Area, perimeter, apothem and angles for any n-gon.

Left, right, midpoint and trapezoid sums from your own function values.

Numbers to Roman numerals and back.

Round to decimals, whole numbers or any nearest multiple.

Convert between standard form and decimal notation.

Area of a pie slice of a circle.

Count sig figs and round correctly.

Gradient, angle, distance and the line equation.

Two points in, y = mx + b out, with every related form.

Exact simplified radical plus the decimal value.

Surface area of common 3D shapes.

Divide a polynomial by (x − a) with the full working shown.

Find the tangent line to a curve at any point, in slope-intercept form.

Area and perimeter of a trapezoid.

Area from base and height, or all three sides.

Sine, cosine and tangent of any angle.

Length, unit vector and direction angles in 2D or 3D.

Volume of cylinders, boxes, spheres and cones.