CCalcanova
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Everyday

Random Number Generator

Generate one or many random numbers in any range — with an option to avoid repeats, perfect for draws and picks.

Up to 1,000

Random numbers for any purpose

Generate a single random number or up to a thousand at once, in any range you set. The "no repeats" option turns it into a fair draw — every number in the range can appear at most once, exactly like pulling tickets from a hat.

Common uses

Picking a giveaway winner from numbered entries, choosing who goes first in a game, drawing lottery-style numbers with friends, generating random samples for a survey or classroom exercise, dice rolls for board games (set 1–6), and picking a random item from any numbered list.

How the fair draw works

When "no repeats" is on, the tool uses a Fisher–Yates shuffle over the whole range — the mathematically standard way to draw without replacement, giving every number an exactly equal chance and no bias toward low or high values.

Frequently asked questions

+How random are these numbers?

They come from your browser's built-in pseudo-random generator, which is excellent for draws, games, sampling, and everyday picks. It is not suitable for cryptography or lottery-grade security, which require certified hardware randomness.

+How do I run a fair raffle or giveaway?

Number your entrants 1 to N, tick 'no repeats', and generate as many winners as you have prizes. Because each draw is unique, no entrant can win twice, and the range guarantees everyone is included.

+Are the min and max included in the results?

Yes — the range is inclusive on both ends. Setting 1 to 10 can produce both 1 and 10.

+Can I generate the same numbers again?

No — every click is an independent draw with no seed, so results can't be reproduced. If you need a record, copy the results or screenshot them at draw time.

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