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About this tool
Spin to decide! Weighted random picker, team selector and giveaway wheel with live odds, history and no-repeat draws.
A decision wheel is a weighted random picker: every entry gets a slice of the circle proportional to its weight, so the chance of it winning is exactly its weight divided by the total of all weights. This one draws from a seeded mulberry32 generator, which means the same seed always produces the same winner and a draw can be checked afterwards. Use it for picking lunch, choosing who presents first, or running a small giveaway.
Open Decision Wheel on AltFTool — it loads instantly in your browser.
Add your input to the workspace.
Adjust the options until the result looks right.
Copy or download the output and put it to work.
Write x3 after a name and it occupies three slices' worth of the circle — verified against the maths, not just visually.
Turn on winner removal for multi-prize giveaways and each name comes out at most once.
Every entry's true chance sits next to how often it has actually come up, so streaks are visible for what they are.
Add x and a number after the name — "Pizza x3" takes three times the arc of a plain entry. With entries weighted 3, 1, 2 and 1 the total is 7, so Pizza wins 3/7 of the time, about 42.9%. Weights from 1 to 100 are accepted.
It uses mulberry32, a small 32-bit pseudo-random generator, seeded fresh for every spin. Over tens of thousands of spins the results match the slice widths to within a fraction of a percent. It is not cryptographically secure, so do not use it to draw anything of real monetary value where an adversary could predict the seed.
Yes by default, because each spin is independent — that is what makes it a fair random pick, and it is why five spins can easily produce two repeats. Turn on winner removal for a giveaway where each prize goes to a different person.
Because a small slice is not a zero slice. A one-in-seven entry still comes up roughly every seventh spin, and short runs cluster: with five entries, seeing one name twice in five spins is common rather than suspicious. The odds column shows what should happen over the long run, not what any five spins will do.