🎲 Random Number Generator

💡 What is a Random Number Generator?

A random number generator (RNG) is a tool that produces outcomes with no deterministic pattern. This page uses secure, browser-side JavaScript to create pseudo-random numbers — good for games, decision-making, testing, and simple simulations. For cryptographically secure randomness, specialized APIs or external entropy sources are required.

⚙️ How to Use This Random Number Generator

1. Choose Type: Integer, Decimal, Even, Odd, or Custom list.
2. Set Minimum and Maximum values (or paste a custom comma-separated list).
3. Specify how many values to generate and set Decimal Precision for decimals.
4. Enable Unique to avoid duplicates when possible.
5. Press Generate to get results instantly — all computation happens locally in your browser.

🔒 Is This RNG Tool Secure?

Yes. All number generation and processing occur in your browser. Nothing is sent to our servers. If you require cryptographic-grade randomness (for key generation, security tokens, etc.), use secure system APIs or specialized services.

🌐 Learn More

• MDN — Math.random()
• Wikipedia — Random number generation
• Random.org — True randomness using atmospheric noise

❓ Frequently Asked Questions

Are the numbers truly random?

They are pseudo-random using Math.random(), which is sufficient for casual use (games, sampling, teaching). For cryptographic needs, use secure randomness sources.

Can I generate negative or decimal values?

Yes — enter negative min/max values or choose Decimal type and set precision. Decimal generation honors the specified precision.

Does unique guarantee no duplicates?

Unique avoids duplicates when the requested count is less than or equal to the available distinct values. If the range is too small for unique results, you’ll be alerted.

Is my data saved or tracked?

No. All computations happen locally; nothing is transmitted or stored.