Random Number Generator

How to Use Random Number Generator

1. Set the minimum and maximum range for your numbers.
2. Choose how many numbers to generate (1–1000).
3. Select Integer or Decimal mode.
4. Toggle "Allow duplicates" on or off.
5. Click "Generate" — results appear instantly.
6. Click "Copy All" to copy the results to your clipboard.

Why Use Our Random Number Generator?

• ✅ Cryptographically Secure — Uses crypto.getRandomValues() instead of Math.random() for true randomness.
• ✅ Integer & Decimal — Generate whole numbers or decimals with custom precision.
• ✅ Batch Generation — Generate up to 1,000 numbers at once.
• ✅ No Duplicates Mode — Option to ensure all results are unique.
• ✅ 100% Private — All computation runs locally in your browser. No data is sent to any server.

crypto.getRandomValues vs Math.random

Math.random() uses a pseudo-random number generator (PRNG) that is fast but predictable — not suitable for security-sensitive applications. crypto.getRandomValues() draws from the operating system's cryptographically secure random source, making it suitable for passwords, tokens, and any scenario where predictability would be a vulnerability. SnapSum uses the secure method by default.