List Randomizer
Shuffle lists or text lines instantly with an unbiased algorithm. Perfect for random draws, team assignments, and data randomization.
Shuffle Settings
How Shuffling Works: This tool uses the **Fisher-Yates Shuffle** algorithm, which ensures an unbiased and truly random permutation of your list items.
This tool is great for cleaning up CSV data where you expect a certain number of characters per field, or for 'extracting' or 'filtering' specific length items from logs. As with all CuscusLab tools, your data is processed locally and never leaves your computer.
Why use an Online List Randomizer & Shuffler?
Need to pick a winner for a giveaway, randomize a student speaking order, or shuffle a list of names for a secret santa? Our Online List Randomizer is the fastest and most unbiased way to reorder any list. Manually shuffling items is prone to 'human bias', where we accidentally favor certain positions; our tool uses mathematical algorithms to ensure every possible order has an equal chance. Simply paste your list (one item per line) and click shuffle. You can clean up your data instantly with options to remove empty lines and trim unnecessary whitespace. Whether you're a teacher, a community manager, or a developer needing random test data, this tool provides instant, verifiable randomness while keeping your data 100% private.
Fair and Unbiased Shuffling
Fisher-Yates Algorithm
We use the industry-standard Fisher-Yates shuffle to guarantee a truly random, unbiased permutation of your items.
One-Click Re-Shuffle
Not happy with the current order? Tap the shuffle button again to instantly generate a completely new sequence.
List Cleaning built-in
Automatically strip leading/trailing spaces and ignore accidental empty lines to keep your output clean.
Browser-Only Randomization
Your list is shuffled entirely on your own device. No data is ever sent to or stored on our servers.
Frequently Asked Questions
Is this shuffle truly random?
Yes. The tool uses a cryptographically secure random number generation seed combined with the Fisher-Yates algorithm, which is the gold standard for unbiased sequence shuffling.
What is the maximum number of items I can shuffle?
The tool can shuffle tens of thousands of items in milliseconds. Your browser's memory is the only practical limit.
Can I shuffle words instead of lines?
Currently, this tool shuffles line-by-line. If you have a list of words on one line, you can use our 'Text Splitter' tool first to move them to separate lines.
Can I use the output for professional draws?
Absolutely. Because the logic is client-side and open, it's a fair way to handle contest orderings or team assignments where transparency is key.