No-Repeat Group Mixer
Form groups while avoiding past pairings.
Form random groups week after week without putting the same people together every time. The mixer remembers who has already worked together and steers new groupings to keep them fresh. It's built for recurring classes, study circles, and team standups where variety keeps things interesting.
Enter. Paste your roster of names and set how many groups or members you want.
0 items
Click Mix groups to see a result.
Options
Recent results
- No history yet.
How it works
- Enter. Paste your roster of names and set how many groups or members you want.
- Mix. Click "Mix groups" to generate fresh groups that avoid recent pairings.
- Reuse. Come back next session and mix again; past pairings are remembered automatically.
Frequently asked questions
How does it avoid repeats?
Past pairings are saved locally on your device. The tool generates many random groupings and keeps the one with the fewest repeated pairs.
Where is my pairing history stored?
Only in your browser on the device you're using. Nothing is uploaded to a server, so clearing your browser data resets the history.
Is the grouping actually random?
Yes. Each candidate grouping is drawn with the Web Crypto API for unbiased randomness; we just prefer the option that minimizes past pairings.
Related randomizers
Further reading
- Cold-calling without the dread: fair student picking that actually works
Random student selectors only help if students believe they're fair — and if the teacher uses them thoughtfully. Here's how to call on students randomly without raising anxiety, plus how to handle groups, seating, and turns.