Free online generators & random tools
Passwords, numbers, nicknames, UUIDs, colours and slugs, plus dice, coin flips and random picks — generated in your browser, instantly and privately. No sign-up.
Featured generators
Nickname Generator
Generate nicknames and usernames from words, random letters or your own name, with seven themes and presets that match the name format of Minecraft, Roblox, Discord and other platforms.
Strong Password Generator
Create strong random passwords from a cryptographically secure source right in your browser — for GOV.UK, HMRC and online banking alike. Full control over character types, and nothing ever leaves your device.
Random Number Generator
Generate a random number, a list, or multiple sets of numbers in any range — for Lotto and EuroMillions lines, office sweepstakes, tombolas and classroom draws — right in your browser.
Browse by category
Random
Fair draws, dice and coin flips, plus nicknames for a new account.
Security
Passwords and other values that must never be guessable.
Development
Identifiers and URL-safe strings for everyday development work.
Design
Colours for when a palette needs a starting point.
What you can do with NumGener
Drawing a number in a range
One number or a whole list, between any two values — Random Number Generator
Running a prize draw
Paste the entrant list and draw a winner at random, with every entry equally likely — Random Picker
Securing a new account
A unique password per account, with its strength shown in bits — Strong Password Generator
Seeding a test database
Identifiers designed to avoid collisions across services — UUID Generator
Playing a tabletop game
Choose how many dice and how many sides, totals counted — Dice Roller
Deciding who goes first
Heads or tails at exactly 50/50, up to 12 coins at once — Coin Flip
Building a URL structure
Turn headings into clean URLs, transliterating as it goes — URL Slug Generator
Picking a colour palette
Live swatches in HEX, RGB or HSL to break a creative block — Random Colour Generator
Naming a new game account
Nicknames that read at a glance, checked against your platform's name format — Nickname Generator
Why NumGener
- Free — no registration and no subscription
- Runs in your browser — your results are never sent to our servers
- Cryptographically secure randomness — crypto.getRandomValues(), not Math.random()
- Password strength shown in bits, so you can judge it yourself
- Works on mobile as well as desktop
- Available in more than 50 languages
How your results are generated
Every generator here runs in your browser. The values you generate are never sent to our servers, so we never log, store or see them. Our Privacy Policy sets out what little we do collect and why.
The randomness comes from the Web Crypto API — crypto.getRandomValues() — which uses your operating system's source of entropy rather than a predictable function such as Math.random(). Every tool that produces a random value uses it; tools that only transform text you enter, such as the Slug Generator, need no randomness at all. Our guides explain the technical details behind this.
Frequently asked questions
Are the generators free?
Yes — every generator is free. There is no paid tier and no subscription.
Do I need an account?
No. There is no registration, no email field, and nothing to fill in before you start.
Does anything I generate leave my browser?
No. Values are produced on your device and are never sent to our servers, so we could not show you your own results even if you asked. What a tool does remember — its settings, including any text you typed into it, its optional history and the favourites you save — is kept in your own browser.