Random Number Generator — Pick a number from any range, roll one or many dice, or shuffle a list of items. Every draw uses your browser’s cryptographically secure random number generator so the results are not predictable and not biased.
Numbers come from your browser’s cryptographically secure RNG. Nothing is sent anywhere.
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O que é Random Number Generator?
Pick a number from any range, roll one or many dice, or shuffle a list of items. Every draw uses your browser’s cryptographically secure random number generator so the results are not predictable and not biased.
Useful for giveaways, classroom picks, board-game decisions, dividing chores fairly, or anything else that needs an unbiased random choice. Set a min and max, choose how many numbers to draw, and copy the result.
Como usar
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Choose a range
Set the minimum and maximum (inclusive).
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Pick how many
One number or a batch — useful for giveaways and raffles.
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Or use a preset
Roll one or many six-sided dice, or shuffle any list of items.
Exemplos
Pick a winner
Generate one number from 1 to 100 for a giveaway.
Resultado: 42
Roll 3d6
Roll three six-sided dice and add them up.
Resultado: 5 + 2 + 6 = 13
Perguntas frequentes
Guias relacionados
How to Calculate Permutations and Combinations (with Worked Examples)
A practical guide to counting: the difference between permutations (order matters) and combinations (order does not), the formula for each, the common real-world cases, and how to run the calculation in your browser without pulling out a calculator or a textbook.
How to Pick a Random Number Fairly (and Why Math.random Is Wrong)
A practical guide to random numbers: the difference between Math.random and crypto.getRandomValues, why fairness matters for giveaways and raffles, how to roll dice and shuffle a list in your browser, and the one case where randomness is genuinely hard.
How to Generate a Cryptographically Secure Random Number in Your Browser
Math.random() is not secure. Learn why, what "secure" means for random number generation, the right browser API to use (crypto.getRandomValues), and how to generate a random number in a range without bias.
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Last reviewed: 2026-09-25