Decision tool

Wheel of Fortune

Type your options, spin, and let it decide. Your list stays in your browser — nothing you type is sent anywhere.

Spin

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Your options

Weights change how much of the wheel each slice takes. Equal weights mean every option is equally likely; a slice twice the size of its neighbour is twice as likely to win.

This session's spins (clears when you close the tab)

How this wheel picks a winner

The winner is decided before the wheel starts turning, not by where it happens to stop. That difference matters: the spin is drawn from the cryptographic generator first, and the animation then rotates the wheel to land on that result. Nothing about the animation can influence the outcome, and no amount of spinning will change the odds.

Each option's slice is sized in proportion to its weight, so the chance of landing on an option is exactly its share of the total weight. Options are drawn with a weighted pick rather than by spinning a physical wheel and measuring the angle, which is why an option with a slice one degree wide can still be chosen reliably.

Setting up your wheel

Type one option per row and press Spin the wheel. Use Load examples for a ready-made set — what to cook, a name for something, chores for the week — or start from an empty wheel. Everything is remembered in your browser, so you can close the tab and come back to the same list.

The number beside each option is its weight. Leave them all at 1 for a fair wheel. Double one and it takes twice as much of the circle and is twice as likely to be chosen, which is how you express "pizza twice a week, sushi once". Setting a weight to zero keeps an option visible but makes it impossible to win, which is useful for removing something without losing your place in the list.

A wheel works best with a handful of options. Past about twenty the slices become too narrow to read, and past a hundred the labels stop being legible on a phone.

Removing the winner

Remove winner deletes the option that was just chosen, which is the quick way to run a sequence — drawing teams, picking who goes first, working through a list one at a time. The wheel updates its slices straight away so the remaining options share the circle evenly between them.

Why a spinning wheel instead of a list

A wheel is only fair if every slice is the same size, and on a hand-drawn or printed wheel they rarely are — a slice that is 4% larger is 4% more likely to win, and small differences nobody can see are enough to matter over many draws.

This one has no such problem: slice sizes are computed from the weights, and the winner is chosen independently of the picture. If you want to confirm that rather than take it on trust, the randomness check runs a chi-square test on the same generator over tens of thousands of draws.

For two options the coin flip is simpler, and for a clean number from 1 to N, one N-sided die does the job without any of this.

Dice Roller — roll dice with any number of sides
Card Pull — draw from a shuffled deck instead
Coin Flip — the two-option case
Randomness Check — test this site's generator

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