Advanced and Statistical
Weighted Random Number Generator
Give each number its own weight so some outcomes are more likely than others, then draw.
Weighted Random Number Generator
Weighted draw
Outcomes and weights
Higher weights are more likely. Values can be numbers or words.
How many draws
Draw with the odds you set
A weighted generator lets some outcomes come up more often than others. List each outcome with a weight, and the tool draws in proportion to those weights. An outcome with weight 5 is five times as likely as one with weight 1. Values can be numbers or words.
How weighting works
The tool adds up all the weights, draws a random point along that total with the cryptographic source, and sees which outcome the point lands in. Bigger weights cover more of the range, so they are picked more often, while the smallest weights still get their fair share over many draws.
Where it helps
Use it for loot tables and game drops, weighted raffles, biased dice, or any model where the choices are not equally likely. Draw once for a single outcome or many times to see the spread. Everything runs in your browser.
Popular generators
Frequently asked questions
How do I set the weights
Write one outcome per line as value then weight, for example 1 : 5. Higher weights are more likely.
Can outcomes be words
Yes. Values can be numbers or words, so you can weight names, prizes or labels as easily as numbers.
Do the weights need to add to 100
No. Weights are relative, so 5, 3 and 1 work just as well as percentages. The tool normalises them for you.
Can I draw many at once
Yes, up to 1000 draws, which is a quick way to see how the weighting plays out.
Is it free
Yes, free and with no sign up.
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For an even draw with no weighting, use the random number generator, or a repeatable draw with the seeded generator.