Roll, draw and generate anything.
Six focused randomizers — numbers, dice, coin flips, raffle draws, strong passwords and UUIDs — plus plain-language guides. Everything runs privately in your browser, with cryptographically secure passwords and IDs.
Pick a randomizer
Six focused generators, each on its own page. Choose one to get started.
Random Number Generator
Pick random integers in any range — with or without duplicates.
Open the toolDice Roller
Roll d4 to d100, add a modifier, and see every result.
Open the toolCoin Flip
Flip one coin or a hundred, with heads/tails counts and percentages.
Open the toolRandom List Picker
Draw random winners from a list or shuffle it into a fair order.
Open the toolPassword Generator
Strong, random passwords with a live strength estimate.
Open the toolUUID Generator
Batch of version-4 UUIDs, ready to copy one by one or all at once.
Open the toolWhy RandomNest
Secure where it counts
The password and UUID generators use the browser's cryptographically secure crypto API, so their output is unpredictable and fit for real security use — while the everyday tools stay fast and light.
Private by default
Everything runs on your device. No accounts, no uploads, no tracking — your numbers, lists and passwords never leave the page.
Instant results
No spinners and no waiting. Press the button and the result appears at once, right in your browser.
English & Russian
The whole site — tools, guides and help — is fully bilingual. Switch languages anytime from the header.
Randomness, made simple
RandomNest is a free suite of online randomizers for the everyday moments that call for pure chance: picking a random number in a range, rolling dice for a board game, flipping a coin to settle a decision, drawing a winner for a raffle or giveaway, creating a strong password, or generating a batch of UUIDs for a project. Each tool is small, fast and focused, so you get the result you need without wading through a bloated app.
The password and UUID generators draw from your browser's cryptographically secure random source, so their output is unpredictable enough for real security use; the dice, number, coin and list tools use fast browser randomness that is perfect for games and everyday choices. Everything runs client-side, which means it is fast, private and available offline once loaded. There is nothing to install and nothing to sign up for. And each tool is backed by a plain-language guide that explains the probability or the security behind it, from the gambler's fallacy to password entropy.
Guides & articles
Plain-language explainers on randomness, probability and the tools behind the numbers.
True Random vs Pseudo-Random Numbers
Most 'random' numbers on a computer come from a formula. How pseudo-random generators differ from true randomness, and when it matters.
How to Run a Fair Raffle or Giveaway
A giveaway is only worth entering if the draw is fair. How to collect entries, pick winners without bias, and prove the result.
Dice Probabilities Every Gamer Should Know
Why 7 comes up most on two dice, what 'bell curve' really means for your rolls, and how advantage and modifiers shift the odds in tabletop games.
Frequently asked questions
Are RandomNest's results actually random?+
Yes. The dice, number, coin and list tools use your browser's Math.random, which is fine for games, giveaways and everyday choices. The password and UUID generators go further and use the cryptographically strong crypto.getRandomValues and crypto.randomUUID for unpredictable, security-grade output.
Is my data sent to a server?+
No. Every generator runs entirely in your browser with JavaScript. The numbers, lists, passwords and UUIDs you create never leave your device and nothing is stored on a server.
Can I draw unique winners for a raffle?+
Yes. In the Random List Picker, turn on "unique winners" and pick how many you need. Each entry can then be drawn at most once, so a giveaway with one prize per person is fair. If you request more winners than there are entries, RandomNest lets you know.
How strong are the generated passwords?+
The strength meter estimates entropy as length × log2(pool size), the number of distinct characters available. As a rough guide, under 40 bits is weak, 40–59 is fair, 60–79 is strong and 80+ is excellent. Adding length and more character types both increase entropy, and length usually helps the most.
What kind of UUIDs does the generator produce?+
Version 4 UUIDs — random identifiers in the standard 8-4-4-4-12 hyphenated format with roughly 122 bits of randomness. They are produced by the browser's native crypto.randomUUID, so collisions are astronomically unlikely.