Random Number Generator — Pick Any Number in Any Range Instantly
Our free random number generator lets you generate one or multiple random integers within any range you specify. Set a minimum and maximum value from 0 to 1,000,000, choose how many numbers to generate (up to 20), decide whether duplicates are allowed, and get your results instantly. Perfect for lottery picks, statistical sampling, random assignments, or simply settling a bet on a number between 1 and 10.
How to Use the Random Number Generator
- Set your range — use the Min and Max controls to define the lower and upper bounds. The default range is 1 to 100.
- Choose how many — set the Count to generate between 1 and 20 numbers at once.
- Toggle duplicates — turn on Allow Duplicates if the same number can appear more than once, or keep it off for unique results.
- Use a quick preset — click 1–6, 1–10, 1–100, or 1–1000 to quickly set common ranges.
- Click Generate or press Space to produce the random numbers.
- Copy your results — click the Copy All button to copy the comma-separated list to your clipboard.
When to Use the Random Number Generator
- Lottery and raffle picks — generate random lottery numbers within a specified range.
- Statistical sampling — pick random sample indices for data analysis or experiments.
- Classroom activities — randomly assign students to seats, groups, or presentation slots.
- Gaming and role-playing — generate random encounter values, stats, or event numbers.
- Random tie-breaking — pick a number from 1 to 10 for a quick tie-breaker.
- Probability experiments — generate large sets of numbers and analyze their distribution.
Key Features
- Fully configurable range — set any min from 0 to max, and any max up to 1,000,000.
- Batch generation — generate 1 to 20 numbers in a single click.
- Duplicate prevention — when disabled, ensures every generated number is unique within the set.
- Visual chips — each result displays as a colored chip, color-coded by value range.
- Statistics summary — shows min, max, sum, and average when generating multiple numbers.
- Quick presets — 1–6 (dice), 1–10, 1–100, and 1–1000 range presets for common use cases.
- Copy All — copies all results as a comma-separated list to the clipboard.
- Generation history — keeps the last 50 sets of results with timestamps.
- Keyboard shortcut — Space or Enter to regenerate.
Frequently Asked Questions
How random are the numbers generated?
The generator uses JavaScript's Math.random() function, which produces a pseudo-random floating-point number between 0 and 1. While not cryptographically secure, it provides sufficient randomness for all practical everyday use cases like raffles, assignments, and games.
Can I generate numbers without repeats?
Yes. When Allow Duplicates is turned off, the generator uses a rejection-sampling approach to ensure all numbers in the set are unique. Note: if the count exceeds the range size (e.g., asking for 10 unique numbers between 1 and 5), duplicates will be forced on automatically.
What is the maximum range I can use?
The maximum value is 1,000,000 and the minimum is 0. This covers the vast majority of practical use cases. For very large random numbers, note that JavaScript integers are precise up to 2^53.
Can I generate a random number between 1 and 6 like a dice?
Absolutely. Use the 1–6 quick preset button for instant dice simulation. You can also use our dedicated Dice Roller tool for more advanced multi-die rolling with d4, d8, d20, and more.