Random Number Generator

About Random Number Generator

Picks random numbers between a minimum and maximum you set, as whole numbers or decimals, with or without repeats. It suits people drawing raffle tickets, rolling dice for a tabletop game, picking a sample from a numbered list or making up test data.

How to use it

1. Set Minimum Value and Maximum Value. They start at 1 and 100, and the minimum must be lower than the maximum.
2. Enter How many numbers? to say how many results you want.
3. Turn Allow Duplicate Numbers off if every result must be different.
4. Turn on Include Decimal Numbers if you want fractions, then set Decimal Places from 0 to 10.
5. Select Generate Random Numbers, then copy the comma-separated list, or use the refresh icon to draw again.

Asking for more unique numbers than the range holds

Minimum 1, Maximum 6, How many 10, Allow Duplicate Numbers off

Cannot generate 10 unique numbers in the range 1 to 6

When to use it

• Rolling several six-sided dice at once by using 1 to 6, a count equal to the dice, and duplicates on.
• Drawing six lottery-style numbers from 1 to 49 with duplicates off.
• Choosing which rows of a numbered spreadsheet to spot-check.
• Producing decimal sample values, such as prices between 5 and 20 with two decimal places.

Questions about Random Number Generator

Are the minimum and maximum included?

For whole numbers, yes, both ends can appear. If you type fractional bounds such as 1.5 and 5.5, the range is narrowed inward to 2 through 5.

Is this random enough for a prize draw or for security?

It uses the browser's Math.random function, which is fine for games and sampling but not cryptographically secure. Do not use it for passwords or anything an attacker could benefit from predicting.

What does no duplicates mean with decimals?

Uniqueness is checked after rounding to your chosen decimal places, so two draws that round to the same value are treated as a repeat and redrawn.

Can I use negative numbers?

Yes. A range such as -50 to 50 works, as long as the minimum is smaller than the maximum.

How many numbers can I request?

The count field hints at 1000 as an upper limit. It must be at least 1, and the tool warns you if it cannot fit that many unique values.

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