Dividing things up when the numbers don't come out even

Dealing beats debating

The instinct when a pile needs splitting is to talk it through: who wants what, who had the good one last time, who's owed a favour. That conversation works for three items and falls apart for twenty, because every item becomes its own negotiation and the person most willing to argue slowly accumulates the best pile. Nobody's cheating, exactly. The process just quietly rewards persistence.

Dealing removes that. Shuffle the items, then hand them out in rotation like cards — one to you, one to you, one to you, back to the top. Everyone ends up with within one item of everyone else, and nobody chose which. It's the oldest fair-split algorithm there is, and the reason card games use it is that it's fast, obviously even, and impossible to lobby.

The Fair Division Tool does exactly that. Put the people in one box, the items in the other, one per line, and it shuffles the items and deals them round-robin into a card per person. Both lists are saved in your browser as you type, so a half-finished inventory survives a closed tab, and each division is recorded in the history below.

It divides by count, not by worth

Worth being clear about this, because "fair" is doing a lot of work in the name. The tool makes the number of items as equal as it can. It has no idea what any of them are worth. Deal out a garage and one person gets the mitre saw while another gets four rusted screwdrivers, and the tool will consider that a job well done — four items each, perfectly even.

That's fine when the items are genuinely comparable: shifts, chores, tickets, boxes of unsorted paperwork. It's not fine when they aren't, and the fix is to do the valuing yourself before you deal. Split the pile into tiers first and deal each tier separately — all the high-value items in one pass, the everyday stuff in another — so nobody's evenness is measured across categories that aren't alike. Or, if one item is worth roughly two of another, list the small one twice so it carries its real weight in the rotation. The tool can only be as fair as the list you hand it.

Who gets the leftover is drawn too

Here's the detail that actually matters, and it's easy to miss. Two things are random in a deal, not one: which items each person gets, and which people get the extras when the count doesn't divide. The tool shuffles the items, and it also shuffles the order in which it deals to people before every division. Your list only decides the order the cards are shown in.

So seventeen items between four people gives 5, 4, 4, 4, and each of the four has the same 1-in-4 chance of being the one with five. Twenty-two tasks between five volunteers gives two people five tasks and three people four, and every pair of volunteers is equally likely to be the two with the extra. Run it again and both the piles and the extras move.

That wasn't always so. Until October 2026 the tool dealt people in the order you typed them, so the extra always went to whoever was at the top of the list, which is usually the person doing the typing. If the extra item is worth having, that was the one part of the deal somebody had chosen. Now the remainder lands somewhere no one chose, which is the whole point of using a tool in the first place. It's still a single, honest draw, though: across several separate divisions, the same person can come out with the extra more than once.

It's worth flagging because a sister tool behaves differently. A chore roster spread over a week reshuffles every day, so having more chores than people evens out on its own — the doubling-up moves around. Fair division is a single deal. There's no next round to correct an imbalance in, so anything uneven in one pass stays uneven.

One small snag: identical names

Each person's share is listed under their name, so two people listed with the same name (capital letters don't count as a difference) would be impossible to tell apart. The tool won't deal at all in that case — it tells you which name appears more than once instead. If you've got two Sams, distinguish them (Sam R. and Sam T.) and the deal comes out as you'd expect.

When you want a different tool

Fair division is for many items into few piles. If you've got exactly one thing per person — four people, four prizes — you don't want a deal, you want a matching, which pairs each person to exactly one item instead of bucketing. And if what you're really splitting is recurring work rather than a fixed pile, a roster that rotates over days will treat people better over time than any single deal can.

Split the pile before it splits the room

The Fair Division Tool runs entirely in your browser — nothing about your list leaves the page. For the neighbouring jobs, the Random Prize Assigner handles one-thing-each, the Two-List Matcher zips any two lists together, and the Random Chore Roster spreads recurring jobs across a week. Deal the items, and let the pile stop being an argument.