Random Number Generator

Draw one or more numbers from a range in the browser — classroom picks and casual raffles, not lottery draws or security tokens.

How to use

Set minimum and maximum. For a die, 1 and 6 with integers on.
Choose whole numbers or decimals, and how many draws (1–100).
Press Generate. Typing alone does not redraw.
Do not use the output as a password, API key or official prize draw.

How it works

Integer mode picks uniformly from every whole number between ceil(min) and floor(max), inclusive. 1 to 6 is a fair die if the generator is fair. 1.2 to 1.4 with integers on contains no integer, so there is no result.

Decimal mode uses [min, max): the minimum can appear, the maximum is the exclusive top. That matches many programming libraries.

Math.random is a pseudo-random generator in the browser. It is fine for “pick a student” or a board-game substitute. It is not a documented entropy source. Do not generate passwords here — use the password generator, which is built for that job — and do not run a cash raffle on it.

Count 1–100. Draws are independent; repeats can happen. Nothing is uploaded.

A coin is 1–2 with integers on. A classroom roster is 1–n. A deck position is 1–52. If you need unique picks without replacement, generate extras and drop duplicates yourself — this is not a shuffle. Seeding is not exposed; two people pressing Generate can still get different lists.

Formula

Integer: uniform choice from ceil(min) through floor(max), inclusive
Decimal: min + u × (max − min), where u is a random value in [0, 1)

Worked examples

A die roll
integers from 1 to 6, count 1 → one of 1, 2, 3, 4, 5 or 6
Three classroom numbers
integers from 1 to 30, count 3 → three integers in that range

Everyday integer ranges

Use	Minimum	Maximum
Coin	1	2
Six-sided die	1	6
Percent roll	0	100
Classroom of 30	1	30
Deck position	1	52

Useful notes

Press Generate; the list does not live-update.
Not for cryptography or official lotteries.
Integer range must contain at least one integer.

FAQ

Are the numbers truly random?: They are pseudo-random numbers from the browser. That is fine for everyday picks. Do not use this page for security tokens or official drawings.
Is the range inclusive?: For integers, yes — both ends can appear. For decimals, the minimum can appear and the maximum is the exclusive upper bound.
Do the numbers leave my browser?: No. Generation runs locally and is not uploaded.
Can the same number appear twice in a list of 5?: Yes. Draws are independent. This is not “sample without replacement.”
Should I generate a password here?: No. Use the password generator. This page is an everyday RNG, not a secret-generation tool.

Related tools

See all Math tools.