Is this generator random enough for a raffle or giveaway?

Yes, standard browser-based random number generation is suitable for raffles, games, and everyday decision-making, though it is not the cryptographically secure randomness used for passwords or security tokens.

Can I generate a list without duplicate numbers?

Yes, use the no-duplicates option when generating a list, which is useful for drawing multiple unique winners from a numbered pool.

What is the difference between this and a cryptographically secure random generator?

A cryptographically secure generator is specifically designed to be unpredictable even to an attacker who knows the algorithm, which matters for passwords and encryption keys but is unnecessary overhead for games or raffles.

Random Number Generator

Generate single numbers, random lists, dice rolls, and coin flips instantly.

Minimum

Maximum

How to use

Single Number — Set a min and max, then click Generate. Click Re-roll for a new number in the same range.
Number List — Set min, max, and how many numbers to generate. Check "No duplicates" to ensure every number appears only once.
Use Shuffle to randomize the order of an already-generated list.
Quick Tools — Roll standard dice (d4 through d100), flip a coin, or get a random Yes/No answer.
Use the Copy buttons to copy results to your clipboard.

About this Random Number Generator

Computers cannot generate truly random numbers on their own — they use a pseudorandom number generator (PRNG), an algorithm that produces a sequence of numbers statistically indistinguishable from randomness, seeded by something unpredictable like the system clock.

"Random enough" for everyday use

Modern browser-based random number generation (JavaScript's Math.random(), backed by the browser's own PRNG) is more than sufficient for everyday uses like raffles, games, classroom activities, and decision-making. It is not the cryptographically secure randomness required for generating passwords, encryption keys, or security tokens — those use a separate, stronger method specifically designed to resist prediction.

Range and duplicates

Setting a minimum and maximum defines the inclusive range the generator draws from. For generating a list of multiple numbers, a "no duplicates" option matters for use cases like drawing raffle winners from a numbered pool, where the same number should not be selected twice; without it, each number in a list is drawn independently and repeats are possible.

Common uses

Picking a winner from a numbered list of entries or participants
Rolling virtual dice or generating game values
Randomly assigning students, teams, or tasks
Sampling a subset of data points for quick testing