Random Number Generator
Generate random numbers within a specified range. Customize quantity, decimal places, sorting, and separators. No upload required.
Generated Numbers
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About Random Number Generation
What is a Random Number Generator?
A random number generator (RNG) produces sequences of numbers that lack any pattern. This tool uses cryptographically secure algorithms to ensure true randomness, making it suitable for games, lotteries, simulations, and scientific research.
Common Use Cases
Random numbers are used in lotteries and prize draws, gaming and entertainment, statistical sampling, cryptography, monte carlo simulations, and random selection from lists or groups.
True Randomness vs Pseudo-Randomness
Computer-generated random numbers are technically pseudo-random, derived from deterministic algorithms. However, modern cryptographically secure PRNGs produce outputs that are practically indistinguishable from true randomness for most applications.
No Duplicate Mode
When 'Allow Duplicates' is disabled, the generator ensures each number appears only once. Note: the quantity cannot exceed the range size. For example, generating 100 unique numbers between 1-50 is not possible.