Methods and reference

Fair random selection

A fair random draw gives each eligible item an equal chance under the stated sampling method. Drawing without replacement means selected items cannot appear again, whereas independent draws permit repeats. Cryptographically generated browser random values avoid some biases of simplistic pseudo-random formulas. A casual randomizer is not a regulated lottery service and should not be presented as independently certified.

Each additional tool has its own method and worked example. Browse all tools.

Explore the tools

• Unique random integers — Draw unique integers from an inclusive range.
• Dice pool roller — Roll arbitrary-sided dice with optional additive modifiers.
• Multiple coin flips — Flip an unbiased virtual coin many times.
• Shuffle a deck — Draw randomly shuffled cards from a standard 52-card deck.
• Choose one list item — Draw one item uniformly from a list you enter.