Is this random number generator unbiased?

Yes. Integers are generated using crypto.getRandomValues with rejection sampling to eliminate modulo bias.

How do I share my configuration?

The tool syncs settings to the page URL so you can bookmark or share a link to replicate the same setup.

Is this random number generator unbiased?

Yes. Integers are generated using crypto.getRandomValues with rejection sampling to eliminate modulo bias.

How do I share my configuration?

The tool syncs settings to the page URL so you can bookmark or share a link to replicate the same setup.

Random Number Generator (Fast, Fair & Free)

Q: Can I generate unique numbers without repeats?

Yes. Uncheck Allow repeats. Ensure quantity does not exceed available values after applying range, step and exclusions.

Create unbiased random numbers instantly. Set range, quantity, allow repeats or unique, decimals, step, exclusions, and a seed for reproducible results.

Range Minimum Maximum Inclusive range. Supports negative numbers.

Quantity How many? Allow repeats Sort results

Number type Integers Decimals

Advanced Exclude (comma/space separated) Seed (optional, for reproducible results)

Results

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About this Random Number Generator

This tool uses the browser's cryptographic RNG (crypto.getRandomValues) for fair and unbiased integer generation. For reproducible sequences, add a seed. You can also create decimals, set step sizes, exclude values, sort results, and copy your list in one click.

Is this truly random?

Integers are drawn using a cryptographically secure method to eliminate modulo bias. Decimal mode uses the same source when unseeded. Seeded mode uses a high-quality PRNG for repeatable output.

Can I generate unique numbers without repeats?

Yes. Uncheck Allow repeats. Ensure that quantity does not exceed the available values after exclusions and step constraints.

How do I share my settings?

Your settings sync to the URL, so you can bookmark or share a link that recreates the same configuration.