Generate truly random numbers instantly — single picks, unique sets, dice rolls, lottery numbers, and more. Free, fast, and 100% private.
Uses crypto.getRandomValues() for cryptographically strong randomness — far superior to Math.random().
Generate up to 500 random numbers at once with optional sorting, unique filtering, and instant statistics.
One-click presets for dice rolls, coin flips, and lottery picks — including 6/49 and fully custom ranges.
Every result is saved in session history so you can review, compare, and copy previous generations without losing your work.
Enter your minimum and maximum values — or click a preset: 1–100, Dice, Lottery, or Coin Flip.
Set how many numbers to generate. Toggle unique (no duplicates), sort order, or decimal output.
Click Generate and instantly see your results. Copy to clipboard, review history, or regenerate in one click.
View live stats (min, max, sum, avg), check your history, and copy all numbers comma-separated.
💡 Pro Tip: Press Enter anywhere on the page to regenerate instantly — no need to click the button. Use the Lottery (6/49) preset for a ready-made draw, or set any custom range for your own game.
A random number generator (RNG) produces numbers that cannot be predicted better than by chance. Our online RNG uses the browser's crypto.getRandomValues() API — a cryptographically secure pseudo-random number generator (CSPRNG) — to ensure each result is statistically unbiased and unpredictable.
True random numbers are derived from physical phenomena (atmospheric noise, radioactive decay). Pseudo-random numbers use deterministic algorithms seeded with an unpredictable value. Our tool uses crypto.getRandomValues() — cryptographically secure and suitable for security-sensitive applications, not just casual use.
| Use Case | Min | Max | Count | Unique? |
|---|---|---|---|---|
| Standard Die (d6) | 1 | 6 | 1 | — |
| D20 (RPG) | 1 | 20 | 1 | — |
| Coin Flip | 0 | 1 | 1 | — |
| Lottery (6/49) | 1 | 49 | 6 | ✓ |
| Powerball (main) | 1 | 69 | 5 | ✓ |
| PIN Code (4-digit) | 1000 | 9999 | 1 | — |
| Percentage | 1 | 100 | 1 | — |
crypto.getRandomValues() — a cryptographically secure pseudo-random number generator (CSPRNG) built into all modern browsers. It is significantly more unpredictable than Math.random() and is suitable for security-sensitive use cases like token generation.This random number generator runs entirely in your web browser using crypto.getRandomValues(). No numbers are ever transmitted, stored, or logged by our servers. All data stays on your device.