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ERPat System
Randomizers & Pickers

Free Weighted Choice Picker

Pick one option randomly while honoring custom weights and showing each option's odds.

Tool

How it’s calculated

  • Each line is parsed as Item | Weight. Missing weights default to 1.
  • The selected option is the first cumulative weight that crosses a random threshold.
  • Odds are shown as each item's weight divided by the total positive weight.

This tool gives an estimate for planning. Check the result against your own records before acting on it.

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