Random Number Generator

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Random Number Generator is a free online tool that can create one or more random numbers within a specified range or distribution.


A random number is a number that is chosen by chance and cannot be predicted. Random numbers are often used for games, simulations, cryptography and statistics. There are different ways to generate random numbers, such as using dice, coins, cards or machines. Some methods are more random than others, depending on the source of randomness and the algorithm used.

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Prime Number Calculator can determine whether a given number is a prime and also compute its previous and next prime number.

Prime Number Calculator

Prime Number Calculator can determine whether a given number is a prime and also compute its previous and next prime number.
Prime Factorization Calculator can break down a composite number into its simplest building blocks, which are prime numbers.

Prime Factorization Calculator

Prime Factorization Calculator can break down a composite number into its simplest building blocks, which are prime numbers.
Odds Calculator can convert the odds of winning or losing into the probability of winning or losing.

Odds Calculator

Odds Calculator can convert the odds of winning or losing into the probability of winning or losing.
Least Common Denominator (LCD) Calculator can find the smallest common denominator for integers, mixed numbers, and fractions.

Least Common Denominator Calculator

Least Common Denominator (LCD) Calculator can find the smallest common denominator for integers, mixed numbers, and fractions.