How does the random number generator work?

It uses the browser's built-in cryptographically-secure random source (Math.random or Crypto.getRandomValues) to produce a value uniformly distributed within your chosen range.

Can I generate a list of unique random numbers?

Yes. When you enable the "unique numbers" option, the generator will not repeat values until the requested count fills the available range, useful for raffles and lottery-style draws.

How do I generate random numbers between 1 and 100?

Set the minimum to 1 and maximum to 100, then click generate. This produces integers (or decimals if enabled) evenly spread across the full range.

Can the generator produce decimals?

Yes. Toggle the decimal option to produce values with up to 4 decimal places, which is useful for statistics, sampling, and simulations that need fractional values.

Is the random number truly random?

True randomness is impossible on a deterministic computer, but the browser's cryptographic random source is statistically uniform and unpredictable enough for games, picks, and most practical uses.

Random Number Generator

Generate random numbers in any range instantly. The random number generator produces integers or decimals between your chosen minimum and maximum, with an option for unique values.

Minimum

Maximum

Count

Unique

Decimals

How to Use the Random Number Generator

Set the minimum and maximum range.
Choose how many numbers to generate.
Enable Unique to avoid repeats or Decimals for fractions.
Click Generate to produce your numbers.

How It Works

Each value is drawn uniformly from the range using the browser's cryptographic random source, so every number in range has an equal chance of appearing.

Frequently asked questions

Everything you need to know about this calculator.

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How to Use the Random Number Generator

How It Works

Frequently asked questions

How does the random number generator work?

Can I generate a list of unique random numbers?

How do I generate random numbers between 1 and 100?

Can the generator produce decimals?

Is the random number truly random?

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