---
title: "Random number generator — free, runs in your browser"
description: "Random numbers in any range, plus dice, coin flips and a shuffled pick from a list. Free, no sign-up, and nothing you enter leaves your browser."
url: https://atoneplace.net/tools/random-number-generator/
site: "At One Place"
---

# Random number generator

Random numbers in any range, plus dice, coin flips and a shuffled pick from a list.

## How it works

Generate random integers in a range, roll dice, flip coins, or pick randomly from a list you paste in. Everything uses your browser's cryptographic random number generator rather than the ordinary one, so the results are not predictable from previous outputs.

Optionally exclude repeats, which turns the generator into a draw — useful for picking winners or assigning an order. With repeats excluded, the count cannot exceed the size of the range.

One thing worth knowing about randomness: genuinely random sequences contain runs that look non-random. Six heads in a row happens roughly once in every 32 sequences of six flips, and a lottery draw of consecutive numbers is exactly as likely as any other specific combination. Sequences that "look random" are usually the ones that have been tampered with.

> This tool runs entirely in your browser. Nothing you enter is sent to a server, logged or stored, and the page keeps working with the network disconnected.

## Common questions

### Is this actually random?

It uses the browser's cryptographic random number generator, which draws on operating-system entropy. It is not predictable from previous outputs, which is the property that matters.

### Why did I get the same number twice in a row?

Because each draw is independent. In a range of ten, the chance of repeating the previous number is one in ten every time, regardless of what came before. Turn on the no-repeats option if you need a draw rather than independent picks.

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