Math & Numbers

Add, subtract, multiply, or divide fractions with step-by-step solutions. Simplify, convert between decimals and percentages, and work with mixed numbers.

Simplify ratios, scale to a target value, compare two ratios for equivalence, and convert between ratios, fractions, and percentages. Aspect ratio presets included.

Calculate any base raised to any power, including negative and fractional exponents, with scientific notation and power rules reference.

Calculate square roots, cube roots, and any nth root with simplified radical form and decimal precision up to 15 places.

Calculate log base 10, natural log (ln), log base 2, or any custom base. Antilog mode and logarithm rules reference included.

Find the GCD and LCM of up to 10 numbers at once with step-by-step Euclidean algorithm and prime factorization methods.

Check if a number is prime, find prime factorization, list all primes in a range using the Sieve of Eratosthenes, or find the Nth prime.

Calculate n factorial, double factorial, subfactorial, trailing zeros, and digit count. BigInt support for exact large number results.

Generate Fibonacci sequences up to any term, check if a number is Fibonacci, and watch golden ratio convergence. BigInt support.

Generate random numbers, roll polyhedral dice, flip coins, pick random items from a list, or draw lottery numbers. Cryptographic option included.

Convert numbers between binary, octal, decimal, hex, and any base from 2 to 36 with live updates. Signed two's complement and bit-length selector included.

Convert numbers to Roman numerals and back instantly. Supports 1–3999, batch conversion, year mode, and a subtractive notation reference table.

Convert any number to English words, currency format, ordinals, or check-writing format. Supports numbers up to vigintillions and multiple currencies.

Calculate X% of Y, find what percentage X is of Y, or compute percentage increase and decrease. Results update as you type.

Calculate mean, median, mode, standard deviation, variance, quartiles, skewness, kurtosis, and range from any dataset. Histogram included.

Calculate single event, compound AND/OR, conditional, and Bayes theorem probabilities with formula display. Results as fractions, decimals, and percentages.

Calculate nPr permutations and nCr combinations with step-by-step formula breakdowns. Supports with and without repetition. BigInt precision.

Solve any triangle using SSS, SAS, ASA, AAS, or right-triangle mode. Get sides, angles, area, perimeter, and a live SVG diagram with step-by-step solutions.

Calculate radius, diameter, circumference, and area from any single value. Arc length and sector area included with an SVG diagram.

Calculate area and perimeter for rectangles, triangles, circles, trapezoids, ellipses, and regular polygons with formula diagrams.

Calculate volume and surface area for spheres, cylinders, cones, cubes, rectangular prisms, pyramids, and more. Capacity conversion included.

Solve ax² + bx + c = 0 with real or complex roots, discriminant, vertex form, axis of symmetry, and a step-by-step parabola graph.

A full-featured scientific calculator with trigonometry, logarithms, exponents, roots, memory functions, and calculation history. Full keyboard support.

Perform matrix addition, subtraction, multiplication, determinant, inverse, transpose, and row echelon form on matrices up to 6×6.

Calculate weighted course grades, convert letter grades to 4.0-scale GPA, and find the minimum score needed on your final exam.