Random Choice

Random Team Generator

Random Team Generator

Enter names and the number of teams, and this random team generator shuffles everyone into balanced groups with an animated reveal.

Team mix box

Press Make teams to mix balls inside the box.

Purpose

Create teams for classes, workshops, meetings, sports, or group activities.

How to use

  1. Enter one name per line.
  2. Set the number of teams.
  3. Start the team maker.
  4. Review and copy the team result.

Randomness does not balance anything

A purely random split feels like it should even itself out, and it does not. With ten people of whom four are clearly stronger, the chance those four split three-to-one or worse is above half. Once is coincidence; every week and people stop enjoying it.

This is not a flaw in the algorithm. Randomness does not produce balance. If you need it, add a balancing rule on top, such as sorting people into tiers first and distributing each tier evenly across the teams.

When the numbers do not divide

Twenty-seven people in groups of four leaves three over. This tool spreads the extras one per team so no team differs from another by more than one member, keeping the team count fixed while minimising the size gap.

Where headcount is itself an advantage, compensate separately. In activities that allow substitutions, rotate players out of the larger team. Otherwise put the stronger players on the smaller one.

Why the mixing is shown

A result that appears as plain text invites why am I on that team. Watching the balls actually mix inside the box and the dividing lines get drawn makes the identical outcome far easier to accept.

Letting a student or participant press the button amplifies the effect. The goal is to make it visible that the organiser had no control over the outcome.

The same people ending up together

With twenty-four people in groups of four, any given pair shares a team about thirteen percent of the time. One repeat across eight sessions is expected, and two or three across a term is unremarkable.

If you want to avoid it, redraw only when that combination appears. Redrawing reads far more naturally to participants than editing the result by hand.

After the teams are set

Adding a step where teams choose a name or colour creates a small amount of identity and noticeably raises engagement. Assigning roles within a team with a ladder draw removes the awkward round of nobody volunteering.

Save the result as an image. Across multiple rounds, or when the same teams continue next session, somebody will always need to check the line-ups again.

Examples

  • Class groups
  • Workshop discussion teams
  • Sports teams
  • Project groups

Notes

  • Random teams may not account for skill, role, attendance, or fairness constraints.
  • Duplicate names are treated as separate people.
  • If the count is not evenly divisible, some teams may have one extra person.

FAQ

Are team sizes always equal?

They are as balanced as possible. Some teams may have one extra person when the count does not divide evenly.

Related tools

List RandomizerList randomizer — shuffle names or items into a random order.Ghost Leg (Ladder Game)Ghost leg / ladder game — connect participants to outcomes at random.Secret Santa GeneratorRandomly match gift-exchange partners, with optional exclusion rules for couples.Random Name PickerRandom name picker — pick one or more names or items at random.

Related guides

How to Split a Class into GroupsGroup work is common but forming groups every lesson is a chore. Here is why random assignment helps in the classroom and how to do it fast.How Random Draws WorkThe difference between Math.random and cryptographic randomness, and how far you can trust a result generated in the browser.How to Make Balanced TeamsRandom team making is fast, but not always best. Here is where it fits, where it falls short, and simple ways to balance teams.