Random teams
Shuffle the list, then deal it into groups.
The list stays in this browser. Split shuffles everyone, then deals them in order.
No teams yet. Split to shuffle a new grouping.
Each tap is a new pseudorandom draw via crypto.getRandomValues. Not atmospheric noise. How the draw works
About this page
Teams are a shuffle, not a single slice. Paste one person per line, choose how many teams you want, and press Split teams. ChanceKit shuffles the full list with the same Web Crypto source as the other tools, then deals names in order: first name to team 1, next to team 2, and so on, wrapping until everyone is placed. If the count does not divide evenly, the earlier teams get one extra person. No team is stuffed while another is empty, as long as you asked for no more teams than people. The starter names are placeholders. Replace them. The list is stored locally under its own key. Split again and you get a new shuffle. The previous grouping is not sticky.
Related
Questions
How are teams built?
Fisher–Yates shuffle, then a round-robin deal. Every person is placed once. The shuffle uses inclusive random indexes from the Web Crypto helper, so it is not a sort-by-random-key shortcut. You see the groups immediately. There is no animation that picks a different assignment at the end.
What if the numbers do not divide evenly?
Sizes differ by at most one. Eight people and three teams become 3, 3, and 2. The extras go to the first teams in the deal, which is fair in size and arbitrary in which team is larger. If you need those larger teams to be random too, that is already true, because the shuffle happened first.
Is the shuffle the same every time?
No. There is no saved seed. Split teams again for a new grouping. If the room disliked the groups, decide whether a reroll is allowed before you look. Unlimited rerolls turn the tool into 'teams the room already wanted.'
Can I set the number of teams?
Yes, from 2 to 12, and not more teams than people. One team is not a split. A request for twenty teams is refused so the layout stays usable. For a single captain, use the name picker instead.
Do the teams have names?
They are Team 1, Team 2, and so on. Rename them out loud or on the board. The tool does not assign mascots. The copy button writes the full grouping as text so you can paste it into a slide.
Should I use the wheel instead?
Use the wheel to pick one person. Use this page to assign everyone. A wheel will not balance group sizes, and a shuffle will not point at a single winner. Classroom seat spins and this splitter share a local list only if you paste the same names. Their storage keys differ.
How do I keep groups from being reshuffled by accident?
Copy the result as soon as the room accepts it. The next press of Split teams builds a new shuffle on purpose. There is no lock icon. If you need the same groups tomorrow, paste the copied text into your own notes. The name list remains in the box, which is not the same as the grouping. A reload keeps the names and drops the columns. That split is intentional: the roster is the thing you were editing, and the groups were a draw.