How are numbers generated?

Numbers are generated using the browser's built-in crypto.getRandomValues() API, which provides cryptographically secure random values.

Can I generate without duplicates?

Yes. Enable the 'No duplicates' option to ensure every generated number is unique within the set.

What is the maximum range?

You can set any min and max values. For the no-duplicates option, the range must be large enough to accommodate the requested count.

Is my data stored anywhere?

No. All generation happens in your browser. Nothing is sent to any server.

Are the numbers truly random?

The tool uses the browser's Web Crypto API (crypto.getRandomValues()), which provides cryptographically secure random numbers.

Can I generate unique numbers (no repeats)?

Yes. Enable the 'No Repeats' option to generate a set of unique numbers within the range.

Random Number Generator — Generate Random Numbers Free

Generate random numbers in any range. Single or bulk generation. Free online random number generator.

Minimum

Maximum

How many numbers? 1

No duplicates

100% Private

No Upload

Instant

What is Random Number Generator?

A random number generator produces numbers that have no predictable pattern. Our Random Number Generator lets you specify a minimum and maximum value and generate single or multiple random numbers instantly using the browser's cryptographically secure random number API.

How to Use Random Number Generator

1Enter the minimum value.
2Enter the maximum value.
3Choose how many numbers to generate.
4Click Generate.

Key Features

Custom min/max range
Bulk generation (up to 1000 numbers)
Unique numbers option (no repeats)
Uses Web Crypto API for true randomness

Benefits

Pick lottery numbers
Generate random data for testing
Make random selections from a range

Why Use Irreva for Random Number Generator?

Pick lottery numbers

Generate random data for testing

Make random selections from a range

Runs 100% in your browser — files never leave your device.

No account, no sign-up, no subscription — free forever.

Works on any device: desktop, tablet, or mobile.

Frequently Asked Questions

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