Question 1

Is the random number truly random?

Accepted Answer

Yes. OneGenerate uses the Web Crypto API (crypto.getRandomValues), a cryptographically secure pseudorandom number generator (CSPRNG). This is far more random than Math.random() and is suitable for security-sensitive applications.

Question 2

What is the largest range I can use?

Accepted Answer

You can generate numbers across any range your browser can handle as a safe integer — from −9,007,199,254,740,991 to 9,007,199,254,740,991. For most use cases, any range you need is supported.

Question 3

Can I generate multiple numbers at once?

Accepted Answer

Yes. Set the count field to generate up to 100 numbers in a single click. Each number is independently and cryptographically random.

Question 4

What are random numbers used for?

Accepted Answer

Common uses include lottery picks, giveaway selection, statistical sampling, game mechanics, simulations, and any scenario requiring unbiased selection from a range.

Question 5

Can duplicate numbers appear?

Accepted Answer

By default, duplicates are allowed (like rolling a real die twice). Toggle "No duplicates" to generate a unique set — useful for lottery-style draws.