CalcVind

Random Number Generator

Pick random numbers in any range

Pick a Range

Type

Uses your browser's secure random generator: every number is equally likely.

Result

Set a range and press Generate.

  1. 1
    Set the range
    Lowest and highest numbers
  2. 2
    Choose how many
    With or without repeats
  3. 3
    Press Generate
    Every number equally likely

How random is it?

Numbers come from your browser's cryptographic random generator, the same kind used for passwords and encryption. Each whole number in the range has exactly the same chance.

P(any one number) = 1 ÷ (highest − lowest + 1)

1 to 100: each number has a 1% chance

Lucky draws and contests

Number your entries, set the range to match, and choose “All different” to pick several winners without repeats. Take a screenshot of the result for a record.

Repeats or no repeats?

Allow repeats for things like dice-style rolls, where the same number can come up twice. Choose “All different” for raffles, team picks or shuffling a list of numbers.

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Frequently asked questions

Can I generate numbers without repeats?

Yes. Set “How many” above 1 and choose “All different”. You can't ask for more numbers than there are in the range.

Can it pick decimal numbers?

Yes. Choose “Decimals” and set the number of decimal places.

Is this truly random?

It uses the browser's cryptographically secure generator, which is unpredictable for all practical purposes and fair for draws and games.

Last reviewed: October 2026