Is this random number generator truly random?

It uses a high-quality pseudo-random number generator (PRNG) from your browser — plenty for raffles, decisions, games and everyday use. For cryptographic randomness, use a dedicated CSPRNG.

Can I set my own range?

Yes — tap the start or end number at the top and type any minimum and maximum.

Can the same number come up twice?

Yes. Each generation is independent, so repeats are possible — that's how randomness works.

Does it work on my phone, and offline?

Yes. It runs in any modern browser on phone, tablet or computer, and once the page has loaded it keeps working without a connection. For a Home Screen shortcut and a widget, install the free iOS or Android app.

Completely free, no signup. There's also a free iOS and Android app.

Free Online Random Number Generator

Need a quick random number? Set your range above, tap anywhere, and get an instant result. This is the simplest custom-range random number generator (RNG) on the web — no menus, no clutter, no signup. Choose your minimum and maximum, tap, and you're done.

How to use it

Tap the start number and type your minimum (e.g. 1).
Tap the end number and type your maximum (e.g. 100).
Tap anywhere, or press the spacebar, to generate a new random number.

What people use it for

Raffles & giveaways — pick a winner from a numbered entry list.
Lottery numbers — generate Powerball, Mega Millions or EuroMillions style picks.
Decisions — set the range to 1–2 for yes/no, or 1–3 for rock/paper/scissors.
Classroom — pick a random student from a roster.
Games — roll a number when you don't have dice handy.
Sampling & testing — quick random values for stats, prototypes and demos.

Popular ranges & tools

Jump straight to a ready-made generator — each one opens preset to the right range:

How random is it?

Every tap draws a fresh, independent number using your browser's built-in pseudo-random number generator (PRNG). Each number in your range has an equal chance, and past results never affect the next one — so, yes, the same value can come up twice in a row. That's not a bug; it's exactly how genuine randomness behaves.

A PRNG is more than random enough for raffles, giveaways, games, classroom picks, and everyday decisions. The one thing it's not built for is security: don't use it to generate passwords, tokens, or cryptographic keys. For those, use a dedicated cryptographically secure generator (CSPRNG).

How to run a fair raffle or giveaway

Fairness comes down to giving every entry an equal, verifiable chance:

Number your entries consecutively, from 1 up to your total number of entries.
Set the range above to match — start at 1, end at your entry count.
Draw the winner live so everyone can see the pick is random.
Drawing several prizes? Note each winner and tap again, re-drawing if a number repeats.

Frequently asked questions

Is this random number generator truly random?: It uses a high-quality pseudo-random number generator (PRNG) from your browser — plenty for raffles, decisions, games and everyday use. For cryptographic randomness, use a dedicated CSPRNG.
Can I set my own range?: Yes — tap the start or end number at the top and type any minimum and maximum.
Can the same number come up twice?: Yes. Each generation is independent, so repeats are possible — that's how randomness works.
Does it work on my phone, and offline?: Yes. It runs in any modern browser on phone, tablet or computer, and once the page has loaded it keeps working without a connection. For a Home Screen shortcut and a widget, install the free app below.
Is it free?: Completely free, no signup. There's also a free iOS and Android app.

Get the app

Prefer it on your phone? The free Lucky Random Number Generator app brings the same one-tap simplicity to your Home Screen, with a widget for instant numbers.