Random Number Generator Online — for Giveaways
Generate random numbers in any range: for giveaways, lotteries, picking a winner. With or without duplicates, sorting, history. Free, no sign-up.
About the random number generator
A simple, fair random number generator: set a 'from — to' range, the count, and get a result. Use it for giveaways on Instagram and Telegram, lotteries, picking a contest winner, statistics homework, or selecting a random row from a table.
Under the hood we use the browser's cryptographically secure PRNG `crypto.getRandomValues` — the same source of randomness used by banking tokens and password generators. No predictable seeds, no time-based determinism — every run is genuinely random. Generate a single number or up to 1000 at once, with or without duplicates ('without' = pick N distinct).
Everything runs locally in your browser, no server upload. The last 10 generations are kept only in your device's localStorage — visible only to you. No sign-up, no ads, no usage limits.
Where it's useful
Instagram, Telegram, social giveaways
Subscribers get numbers 1, 2, 3… N. Generate a random number in that range — winner picked. Record the screen for proof of fairness.
Lottery and contest winner
Pick 5 winners from 247 entries without duplicates: range 1–247, count = 5, uncheck 'Allow duplicates'. Done.
Study and science
Random sampling for statistics, generating test data, dice roll (1–6) or coin flip (0–1), probability theory exercises.
Games and decisions
Pick a random game, movie, recipe for dinner. Random yes/no (0–1). Random PIN. Any situation needing an unbiased choice.
FAQ
Are the numbers really random?
Yes — we use the browser's cryptographic generator crypto.getRandomValues, the same one used for secure tokens and passwords. Rejection sampling guarantees uniform distribution across any range (no edge bias).
How many numbers can I generate at once?
From 1 to 1000 per run. If duplicates are off and your range is smaller than the count, the generator will cap the result at the range size.
Is it good enough for Instagram/Telegram giveaways?
Yes — that's the most common use. Since everything runs in the browser you can record your screen during generation so subscribers can verify fairness. No third party can tamper.
Can I exclude duplicates?
Yes — uncheck 'Allow duplicates' and every result will be unique. Useful for picking 5 distinct winners from a list of 247.
Are the numbers stored on a server?
No. The last 10 generations are stored only in your browser's localStorage. Clear cache, history disappears. We keep no server-side logs.
How is this different from JavaScript's Math.random?
Math.random() is a pseudo-random generator, potentially predictable if the seed is known. We use crypto.getRandomValues — a cryptographically secure RNG seeded with hardware entropy (CPU timers, mouse, keyboard).
More random pick tools
Free randomizers for raffles, games and quick picks — all run in your browser, no sign-up.