Random Team & Group Generator: Balanced, Instant, Fair

The tool uses a Fisher-Yates shuffle algorithm, which produces a uniformly random permutation of your names. Each possible ordering is equally likely. The randomness comes from JavaScript's Math.random() function, which is pseudorandom — perfectly fine for casual use like classroom groups or game nights, but not cryptographically secure. Understanding this helps you see how randomness is achieved and what 'random' means in this context.

When the number of people doesn't divide evenly by the number of teams, some teams will have one extra member. For example, 10 people into 3 teams means one team gets 4 people and two teams get 3. The tool distributes the extras as evenly as possible using round-robin assignment, which naturally balances team sizes. The size spread (difference between largest and smallest team) is usually 0 (perfect balance) or 1 (near-perfect balance). Understanding this helps you see why perfect equality isn't always possible and how extras are distributed.

No. This tool is designed for informal, everyday use like study groups, games, and classroom projects. It assigns people randomly based only on names — it knows nothing about skills, qualifications, experience, abilities, or other important factors. For hiring, performance reviews, HR processes, or any consequential decisions, use appropriate professional processes and methods. Understanding this helps you see when this tool is appropriate and when professional methods are needed.

'By number of teams' lets you specify exactly how many teams to create (e.g., 3 teams), and the tool divides people evenly across those teams. 'By group size' lets you specify the desired number of people per team (e.g., 4 people per team), and the tool calculates how many teams are needed. Use 'by number of teams' when you have a fixed number of teams in mind, and 'by group size' when you want teams of a specific size. Understanding this helps you choose the right mode for your needs.

Each time you generate or reshuffle teams, the shuffle is random and independent. The probability of getting the exact same teams again is very low (1 divided by the number of possible orderings). If you want reproducible results, you could note down the team assignments or use a seed (though the tool doesn't currently expose seed input in the UI). For most purposes, reshuffling gives you different team combinations each time. Understanding this helps you see why reshuffling creates new combinations.

The names you enter are processed entirely in your browser and are sent to our AI assistant only if you ask it a question. We don't store your name lists long-term or share them with third parties. However, as with any online tool, avoid entering sensitive personal data like full names with identifying information if privacy is a concern. Understanding this helps you see how your data is handled and what privacy considerations apply.

The tool works best with reasonable group sizes — up to a few hundred names and up to 100 teams (when allowEmptyTeams is enabled). For very large groups, you might experience slower performance. If you're organizing hundreds of people, consider using specialized event management software. Understanding this helps you see the practical limits and when to use other tools.

'Balanced sizes' means teams differ by at most 1 person when possible. If the number of people divides evenly by the number of teams, all teams have the same size (perfect balance, size spread = 0). If there's a remainder, some teams get 1 extra member (near-perfect balance, size spread = 1). Round-robin distribution naturally creates balanced teams. Note that 'balanced' here means equal sizes, NOT skill balance or ability matching. Understanding this helps you see what 'balanced' means in this context.

Yes! You can choose from three label schemes: Team Numbers (Team 1, Team 2, Team 3), Team Letters (Team A, Team B, Team C, with support for AA, AB, etc. for large counts), or Custom Prefix (your custom prefix + number, e.g., 'Group 1', 'Squad 1'). The custom prefix option lets you use any label you want. Understanding this helps you see how to personalize team names for your needs.

If you request more teams than people and 'allow empty teams' is enabled, some teams will be empty. For example, requesting 10 teams for 5 people creates 5 teams with 1 person each and 5 empty teams. If 'allow empty teams' is disabled, the tool limits the number of teams to the number of people (so no empty teams). Understanding this helps you see how empty teams are handled and how to avoid them if desired.