Can I generate negative numbers or decimals?

You can set negative integer minimums and maximums (e.g. -50 to +50). Decimal support is available via custom step intervals.

Is there a limit on how many numbers I can generate?

You can generate up to 1,000 numbers in a single batch instantaneously.

Random Number Generator

Popular

Generate cryptographically secure or pseudo-random numbers within any custom range with sorting and uniqueness controls.

Local Browser Execution: 100% Client-Side. Random generation is computed entirely in your browser memory via window.crypto.getRandomValues. No server transmission.

Uniform Distribution: integer = min + (cryptoRandom32 % (max - min + 1))

Understanding Your Results

Generated numbers are sampled with uniform distribution across your specified range [Min, Max]. If 'Unique numbers' is enabled, every number in the batch is guaranteed to appear at most once.

Practical Guidance & Next Steps

For raffles and giveaways, set Min to 1 and Max to the total number of participants. Use the 'Ascending' sort option to easily check against ticket lists. Use the Copy button to export results directly to spreadsheets.

What is this?

A high-speed random number generator (RNG) designed to produce unbiased random numbers within any integer range you specify. Uses the browser's native cryptographic entropy source (crypto.getRandomValues) for genuine statistical randomness.

How does it work?

1. Set your minimum and maximum values (e.g., 1 to 100). 2. Choose how many numbers to generate. 3. Toggle whether numbers must be unique (no duplicates). 4. Click 'Generate Numbers' to instantly view, sort, or copy the results.

Why use it?

Unlike simple algorithmic generators that repeat patterns, our tool leverages the browser's hardware-backed cryptographic random generator. It runs 100% locally on your machine with zero server lag and zero data tracking.

Technical Scope & Calculation Limitations

Uses local client-side pseudo-random hardware entropy (Web Crypto). While cryptographically robust for drawings, games, and tokens, it should not be used as an air-gapped hardware random number generator (TRNG) for high-assurance military cryptography.

Frequently Asked Questions

Yes. It uses the Web Cryptography API (window.crypto.getRandomValues), providing cryptographically secure pseudo-random values seeded by system hardware entropy.

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