Math & Numbers
Calculators for percentages, fractions, stats, primes, sequences, and more.
Percentage CalculatorFind a percentage of a number, work out what percent one value is of another, and calculate percentage change.Random Number GeneratorGenerate random numbers in any range, with or without duplicates, right in your browser.Number to WordsConvert any number into English words — integers, decimals, negatives, and a currency (dollars and cents) mode.Prime Number CheckerCheck whether a number is prime, and see its prime factorization, divisors, and the nearest previous and next primes.Average CalculatorPaste a list of numbers to get the mean, median, mode, range, min, max, count, sum, and standard deviation instantly.