Team Randomizer

A Team Randomizer is an online tool that fairly splits a list of participants into groups using a proven randomization algorithm (Fisher-Yates shuffle). Simply enter all names, choose how many groups you need (or how many people per group), and the tool instantly assigns everyone to a group with complete impartiality. No bias, no manual sorting — just fair, random distribution every time.

Yes. This tool uses the industry-standard Fisher-Yates (Knuth) shuffle algorithm, which ensures every possible permutation of names has an equal probability of occurring. The algorithm runs in O(n) time and produces a uniformly random shuffle. Combined with JavaScript's cryptographically influenced Math.random(), the results are statistically fair for all practical purposes including classrooms, sports, and team-building events.

By Number of Groups: You specify how many groups you want (e.g., 4 groups), and the tool evenly distributes all participants across those groups. If the total doesn't divide evenly, some groups will have one extra person.

By People per Group: You specify the maximum number of people each group should contain (e.g., 5 per group). The tool calculates how many groups are needed and distributes participants accordingly. The last group may have fewer people if there's a remainder.

Absolutely! Teachers use this tool for project groups, reading circles, quiz teams, and PE class activities. Coaches use it to create balanced practice squads or tournament brackets. The unbiased nature of the randomization ensures students and players perceive the selection as fair. You can also re-randomize instantly if you need different arrangements.

There's no hard limit — the tool handles anywhere from 2 to hundreds of names efficiently. For very large lists (200+ participants), the page remains responsive. Each name goes on its own line in the input box. You can paste names directly from a spreadsheet, roster, or any text source.

Yes! Click the "Copy Results" button to copy all group assignments to your clipboard in a clean text format. You can then paste the results into an email, document, chat, or spreadsheet. The format includes group headers and member lists, making it easy to share with participants or colleagues.

When using "By Number of Groups" mode and the total doesn't divide evenly, the tool distributes the remainder one person at a time across the first groups. For example, 10 people into 3 groups gives you groups of 4, 3, and 3. The distribution summary clearly shows you which groups have extra members so there are no surprises.

The tool keeps your current results visible until you randomize again or clear the input. If you want to compare different randomizations, we recommend copying each result set using the "Copy Results" button. The "Re-Randomize" button lets you instantly generate a new random grouping with the same participants and settings.