Maths and number calculators

Percentage Calculator Calculate percentages in three modes: what is X% of Y, what percentage is X of Y, and find the total… Percentage Change Calculator Calculate percentage change between two values. Shows increase or decrease as a percentage with… Statistics Calculator Calculate mean, median, mode, standard deviation, variance and more from a dataset. Supports sample and… Random Number Generator Generate random integers within a range. Options for unique values, sorted output and multiple draws… Fraction Calculator Perform arithmetic on fractions with step-by-step working. Automatically simplifies to the lowest terms. Number Base Converter Convert numbers between binary, octal, decimal and hexadecimal bases. Supports custom bases from 2 to… Quadratic Equation Solver Solve quadratic equations (ax² + bx + c = 0) and find real or complex roots, vertex, axis of symmetry… Scientific Notation Converter Convert numbers between standard decimal, scientific notation, and engineering notation. Supports very… Ratio Calculator Simplify ratios, solve for missing values in proportions and distribute a total according to a given… Roman Numeral Converter Convert between Arabic numbers and Roman numerals in both directions. Validates Roman numeral syntax… Prime Factorisation Calculator Break any integer into its prime factors. Shows the factorisation tree, exponent form and all divisors… GCD & LCM Calculator Calculate the greatest common divisor and least common multiple of two or more numbers. Shows…