Random Number Generator 1–5
One click gives you a fair random number from 1 to 5 — every value has exactly a 1-in-5 chance. Built for five-point ratings, sampling one of five options, or picking a weekday at random. The From/To fields let you switch to any other range on the spot.
How the pick works
The generator asks your browser's cryptographic random source (crypto.getRandomValues) for a value and maps it uniformly onto 1…5, so every outcome has probability exactly 1/5 — no pattern, no memory of previous picks.
Independence is the point: a number is never "due". Each click is a fresh draw, like a fair die that can't remember what it rolled before. Everything runs locally in your browser.
Worked examples
Example 1: random weekday for a chore rotation
The classic 1–5 use case, done fairly.
- Map 1–5 to Monday–Friday.
- Generate one number to assign this week's day.
A fair pick nobody can argue with.
Example 2: generating several at once
You need a handful of values from 1–5.
- Set "How many" to the count you need.draws are independent — repeats can occur
- Copy the list with the Copy button.
A batch of independent draws, like rolling the same die repeatedly.
FAQ
Is every number from 1 to 5 equally likely?+
Yes — the draw is uniform: each value has probability exactly 1/5, verified by the mapping from the browser's cryptographic generator.
Can the same number come up twice in a row?+
Of course — independent draws have no memory, and back-to-back repeats happen with probability 1/5. A repeat is evidence of fairness, not brokenness.
Can I use a different range?+
Yes — edit the From and To fields for any whole-number range (negative numbers included), or tap the preset chips for the common 1–3 through 1–100 ranges.
Is this fair enough for raffles and giveaways?+
For informal draws, absolutely — cryptographic randomness is stronger than dice. For regulated lotteries you'd need an audited process, which no browser page provides.
Related calculators
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