Fair Division Tool
Distribute items fairly between people.
The Fair Division Tool spreads a set of items across a group of people as evenly as possible, using a random tie-break when things don't split cleanly. Use it for sharing chores, splitting loot, dividing tasks, or handing out shifts so no one feels shortchanged. Unlike a raffle, everyone walks away with a fair share rather than one winner taking all.
Enter. List the items to share and the people who will receive them.
Click Divide to see a result.
Options
Recent results
- No history yet.
How it works
- Enter. List the items to share and the people who will receive them.
- Divide. Click Divide to spread the items as evenly as possible.
- Review. See who got what, including any randomly assigned leftovers.
- Redo. Divide again for a fresh allocation if you want a different split.
Frequently asked questions
What if the items don't divide evenly?
Any leftovers are assigned at random, so every person's expected value comes out equal over time.
How is this different from a raffle?
A raffle gives everything to one winner. Fair division spreads the items so everyone gets at least one when there are enough to go around.
Are the random tie-breaks unbiased?
Yes. The tool uses your browser's Web Crypto API for the random assignment, so no person is favored.
Is my list of items and people private?
Yes. Everything is processed in your browser and works offline, so nothing you enter is sent to a server.