Math Calculators

Trig, logs, exponents, parentheses, memory, and history, with a real expression parser.

Add, subtract, multiply, or divide fractions and mixed numbers, with step-by-step working.

Calculate percent of a number, percent change, increase, and decrease.

Crypto-secure random integers or decimals, with no-duplicate and sort options.

Solve any triangle by SSS, SAS, ASA, AAS, or SSA: sides, angles, area, perimeter, altitudes, and a live SVG drawing.

Mean, variance, and standard deviation (sample & population), plus median, mode, quartiles, and step-by-step working.

Find the n-th term and sum of arithmetic and geometric sequences with step-by-step working, chip visualization, and a bar chart.

Volume of spheres, cubes, cylinders, cones, capsules, and rectangular tanks.

Percent error between observed and true values.

Evaluate any base raised to any power: positive, negative, integer, or fractional. Includes step-by-step working, a full power table, and an exponent laws reference.

Add, subtract, multiply, and divide binary, decimal, hex, and octal numbers, with instant base conversion and a bit-level breakdown.

Hexadecimal arithmetic (+−×÷) and bitwise operations (AND, OR, XOR, NOT, shifts) with results in hex, decimal, binary, and octal simultaneously.

Compute remaining quantity, decay constant, and elapsed half-lives.

Solve ax² + bx + c = 0 step-by-step on a math notepad: discriminant, roots, and a parabola graph.

Slope, distance, midpoint, and equation of the line between two points.

Calculate the natural log (ln), common log (log₁₀), binary log (log₂), and any arbitrary-base logarithm from a single input. Includes change-of-base step-by-step derivation, interactive logarithm curve chart, and identities reference.

Calculate the area and perimeter of squares, rectangles, circles, triangles, trapezoids, and ellipses, with step-by-step solutions and multi-unit results.

Find the minimum sample size for any confidence level and margin of error. Supports finite population correction, custom proportions, and a full margin-of-error reference table.

Single, joint, and union probabilities, with a live formula breakdown.

Full descriptive statistics from a single dataset paste.

Arithmetic, geometric, and harmonic means of any dataset.

Find the median, quartiles, IQR, and five-number summary of any dataset, with a box plot and automatic outlier detection.

Find the mode (most-frequent value) of any dataset. Classifies as unimodal, bimodal, or multimodal. Generates a full frequency table with inline bars, a frequency bar chart, and companion statistics (mean, median, range).

Find the range, min, max, midrange, quartiles, and IQR from any list of numbers. Visual box plot and sorted display included.

nPr permutations and nCr combinations with full working.

Calculate the Z-score for any data point and see all four normal-curve probability areas: left tail, right tail, between ±z, and both tails.

Calculate a confidence interval for a population mean (Z or t-distribution) or a proportion (Wald and Wilson) at any confidence level.

Simplify ratios to lowest terms, solve proportions (A:B = C:D) for any unknown, and divide a quantity in a ratio, with step-by-step working.

Distance between two points in 2D or 3D space.

Radius, diameter, circumference, and area of a circle from any one input.

Calculate the total, lateral, and base surface area of 7 shapes: sphere, cube, cylinder, cone, rectangular prism, square pyramid, and triangular prism. Supports m, cm, mm, ft, and in with instant unit conversions and step-by-step formula breakdowns.

Solve for any side of a right triangle using a2 + b2 = c2. Find the hypotenuse or either leg, with proportional diagram, angle calculations, area, perimeter, and step-by-step solution.

Solve all sides and angles of a right triangle from any two valid inputs: two legs, leg + hypotenuse, or a side and an angle. Includes trig ratios, area, perimeter, SVG diagram, and step-by-step working.

Square root, cube root, and any nth root.

LCM of 2–20 integers with prime factorization table, step-by-step working, GCD, and first multiples.

Find the GCF of 2–20 integers with step-by-step Euclidean algorithm, prime factorisation, all common factors, and the related LCM.

Find every factor, all factor pairs, and the complete prime factorisation of any positive integer up to 999,999,999.

Round any number to the nearest whole number, tenth, hundredth, thousandth, or significant figure, with step-by-step explanation and five rounding methods.

Add, subtract, multiply, transpose, find the determinant or inverse of matrices up to 5×5.

Convert between decimal and scientific notation, and add, subtract, multiply or divide numbers in scientific notation with step-by-step working.

Arbitrary-precision arithmetic on integers far beyond JavaScript's safe range.

Find the prime factorization of any integer up to 10 billion. Displays exponent notation, an interactive factor tree, step-by-step division ladder, and all divisors. Detects primes, perfect squares, and perfect cubes.

Find all common factors shared by two or more positive integers, with a factor grid, divisibility table, GCF, and LCM.

A clean four-function calculator with memory and percent.

Perform long division with the traditional bus-stop layout, step-by-step working, optional decimal extension, and repeating decimal detection.

Arithmetic mean, geometric mean, harmonic mean, median, mode, and MAD, with a number-line visualization and deviation table.

Calculate the exact p-value from a Z, t, chi-square, or F test statistic: one-tailed or two-tailed, with critical values and significance levels.