What algorithm does the list randomizer use?

The tool uses the Fisher-Yates shuffle algorithm, which is the standard method for generating an unbiased random permutation. It works by iterating through the list from the last element to the first, swapping each element with a randomly chosen element from the remaining unshuffled portion. This guarantees every possible ordering is equally likely.

Can I shuffle the same list multiple times?

Yes, you can click 'Shuffle Again' as many times as you like. Each click produces a completely new random order. The tool re-shuffles from the original list each time, so you always get a fresh random permutation.

Is the shuffling truly random?

The Fisher-Yates algorithm itself is mathematically proven to produce a uniform distribution. The randomness of the results depends on the quality of the random number generator used. This tool uses the browser's built-in random number generator, which provides sufficient randomness for most applications.

What is the difference between a list randomizer and a random picker?

A list randomizer shuffles all items into a new random order (keeping all items), while a random picker selects a subset of items from the list. Use the randomizer when you need all items in a new order, and the picker when you need to choose specific items from a larger list.

Can I shuffle very long lists?

Yes, the tool handles lists of hundreds or thousands of items. The Fisher-Yates algorithm is efficient (O(n) time complexity), so even very long lists shuffle almost instantly. The practical limit depends on your browser's memory, but most lists you'd work with will process without any delay.

Will duplicate items be removed?

No, the randomizer preserves all items in your list, including duplicates. It only changes the order of items — it does not add, remove, or modify any items. If you need to remove duplicates, use a duplicate line remover tool first, then shuffle the unique list.

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List Randomizer

A list randomizer shuffles items into a completely random order using the Fisher-Yates algorithm. Enter your items one per line, click shuffle, and get a new random arrangement. Every possible ordering has an equal probability of occurring.

100% FreeNo Signup RequiredBrowser-BasedPrivate & Secure

What is List Randomizer?

A list randomizer is a tool that shuffles the items in a list into a random order using the Fisher-Yates algorithm, ensuring every possible permutation is equally likely.

Complementary Tools

These tools work great alongside List Randomizer:

Remove Duplicate Lines Random Decision Maker

Start Using List Randomizer Today

The list randomizer uses the proven Fisher-Yates algorithm to deliver truly random shuffles every time, with side-by-side comparison views that make it easy to see the results. Whether you're randomizing a team order, shuffling a playlist, or creating randomized study lists, this tool provides mathematically fair shuffling with an intuitive interface. Its unlimited re-shuffling and client-side processing make it both convenient and private.

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