How are groups balanced?

In "By group count" mode the items are shuffled then distributed round-robin, so groups differ by at most one member. In "By group size" mode items are chunked into blocks of the requested size; the last group may be smaller if the total does not divide evenly.

Is the shuffle truly random?

Yes. The generator uses a Fisher-Yates shuffle backed by crypto.getRandomValues, which draws from the browser's cryptographically secure entropy source — not the predictable Math.random function.

Can I re-shuffle without re-entering items?

Yes. The Shuffle Again button runs a fresh shuffle on the same item list and regenerates the groups, so you can keep reshuffling until you are satisfied with the result.

What happens if I request more groups than items?

The tool caps the group count at the number of items, so each item gets its own group. No group will be empty.

Is any data sent to a server?

No. All processing happens entirely in your browser. No names, group assignments, or any other data are transmitted anywhere.

Random Group Generator

Name: Random Group Generator
Availability: InStock
Author: Nham Vu

Paste names, set group count or size, click Generate — get balanced random groups instantly.

Enter Items

Items (one per line) 0 items

Split mode

Number of groups

Group name prefix

Groups will be labeled as "Group 1", "Group 2", etc.

Groups

Enter items and click Generate to create groups.

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Summary

Paste names, set group count or size, click Generate — get balanced random groups instantly.

How it works

Items are shuffled using the Fisher-Yates algorithm seeded with crypto.getRandomValues for true randomness. In "By group count" mode they are then distributed round-robin so groups differ by at most one member. In "By group size" mode they are chunked sequentially after the shuffle.

Use cases

Divide a classroom into project or discussion groups.
Assign attendees to breakout rooms for workshops or events.
Randomly split a list of tasks among team members.
Create fair draw brackets or raffle groups.

Frequently Asked Questions

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Last updated: 2026-05-28 · Reviewed by Nham Vu