A weighted picker selects an option at random in proportion to positive weights. Use it for low-stakes allocation or to reveal your reaction, not to outsource a consequential decision that requires evidence or constraints.
Every positive weight is converted into a visible probability. Equal weights give equal chances.
Add two to twelve valid options, review their probabilities, then make a browser-generated draw.
The tool divides each positive weight by the total weight to calculate its chance. It then uses the browser's cryptographic random-number generator to select one point within that total. The draw and session history remain in the page.
Weights do not need to total 100. Values of 1, 1, and 2 produce chances of 25 percent, 25 percent, and 50 percent. Doubling every weight leaves the probabilities unchanged. A zero or negative value is rejected because it does not define a selectable chance.
Three team members have completed one, one, and two turns in a desirable rotation. If the next opportunity should compensate the people with fewer prior turns, their weights could be 2, 2, and 1. The normalized chances become 40 percent, 40 percent, and 20 percent. The rule should be stated before the draw and applied consistently.
Use the this-or-that generator for reviewed conversation prompts. Use the two-option comparison engine when the options have material consequences that a random selection cannot evaluate.
See how weights become probabilities, when equal odds are appropriate, and when randomness is the wrong decision method.
Each positive weight is divided by the total of all positive weights. An option with weight 3 among total weight 10 has a 30 percent chance on each independent draw.
Use expected value for consequential probabilitiesNo. The picker uses the browser's cryptographic random-number generator. Options, weights, and the visible session history remain in the current page and are not submitted.
Read the privacy policyDo not use it to bypass safety, affordability, consent, legal obligations, or evidence. For a consequential choice, use the draw only to notice your reaction, then return to the facts and constraints.
Use the complete two-option method