Random Number Generator
Random integers, decimals, dice rolls (3d6+2, 4d6kh3), coin flips, Gaussian numbers, a lottery-style unique draw or a pick from your own list — bulk, optionally unique, seeded for reproducibility, with a distribution histogram and export.
What this tool does
It produces random numbers in whichever shape you need — a plain range, dice, coin flips, a bell curve, a unique draw or a pick from a custom list — and shows how the results are distributed.
Modes
Integers / Decimals in a min–max range, with a
count, optional uniqueness and a step. Dice using
standard notation: 3d6+2, 2d20,
d100, or keep-highest / keep-lowest like
4d6kh3. Coin flips.
Gaussian — normally distributed values from a mean and
standard deviation (Box–Muller). Unique draw — a
lottery: N distinct numbers from a range. From a list
— pick items from text you paste.
Seeded vs secure
Leave the seed blank and every number comes from the browser's cryptographic generator. Set a seed and the sequence becomes deterministic — the same seed and settings always give the same numbers, which is useful for tests and shareable results but must not be used for anything that needs to stay secret.
Privacy
Generation is entirely local. Nothing is sent anywhere.