Best Free Random Generators

The best free online random generators create passwords, UUIDs, numbers, and test data, and pick or shuffle items, all in your browser. All Tools Verse has a full set of free generators that run client-side with no sign-up, so a password or key is generated on your own device. This guide picks the best free tool for each task, from a strong password to a batch of test records.

Passwords, UUIDs and keys

For security values, Random Password builds a strong password, Random UUID and Random GUID make unique identifiers, and Random String and Random Bytes produce custom tokens. For networking, Random IP and Random MAC Address generate test addresses.

Random numbers

For numbers, Random Number Generator and Random Integers in a Range cover the basics, with Decimals, Hex Numbers, Prime Numbers, and Fractions for specific needs.

Test data

To mock a dataset, Random JSON, Random CSV, Random XML, and Random TSV build sample files, Random Data from a Regex matches a pattern, and Random Date with Random Time fill in timestamps.

Pick and shuffle

To choose or reorder, Pick a Winner runs a fair raffle, Pick a Random Item chooses from your list, and Shuffle Lines, Shuffle Words, and Shuffle Letters randomize order.

Trusted alternatives

Every programming language has a random function for scripting, a password manager generates and stores passwords together, and spreadsheets can make random numbers in bulk. For a single quick value or a fair pick, a focused browser tool is faster.

Frequently asked questions

How do I generate a strong random password?

Use Random Password, choose the length and character types, and save the result in a password manager. It runs in your browser, so the password is never sent anywhere.

How do I generate a UUID?

Random UUID produces a standard version 4 UUID, and Random GUID gives the Microsoft style identifier.

How do I create test data for an app?

Use Random JSON, Random CSV, or Random XML to build sample files, or Random Data from a Regex to match a specific format.

How do I pick a random winner fairly?

Pick a Winner shuffles your entries and selects one at random, which is handy for raffles and giveaways.

Are these generators free and private?

Yes. Every tool is free with no account, and values are generated on your device, so passwords and keys are never uploaded.

This guide is part of our roundup of the best free online tools.