Random Number Generator
About this Random Number Generator
Generate random numbers within a range you specify. Set a minimum and maximum value, choose how many numbers you need, and optionally require that all numbers be unique (no duplicates). The tool uses strong, unbiased randomness suitable for giveaways, sampling, games, testing, and simulations. Whether you need a single random number or a list of many, all generation happens in your browser—no server involvement—so your use case stays private and results are instant. Useful for educators, developers, event organizers, and anyone who needs fair, random outcomes without installing software.
Key Features
Set any minimum and maximum value for the range
Generate one number or many numbers in a single run
Optional "unique only" mode so no number repeats in the result
Uses cryptographically strong randomness where available
Copy the result list to clipboard for use elsewhere
Runs entirely in your browser; no data sent to servers
How to Use
Set the minimum and maximum values that define your range
Choose how many random numbers you want to generate
Enable "Unique only" if you need no duplicates (e.g., drawing winners)
Click Generate to produce the numbers
Copy the list or use the numbers as needed
Popular Use Cases
Giveaways and prize draws: pick random winners from a range of entry numbers
Sampling: select random IDs or indices for surveys or testing
Games and dice: simulate rolls or pick random values within a range
Testing and simulations: seed scenarios with random inputs
Education: demonstrate probability or randomness in class
Tips & Best Practices
Unique means no repeats. If you ask for more unique numbers than the range size (e.g., 10 unique numbers from 1–5), it is impossible; the tool will only return as many as possible.
For giveaways, use a range matching your entries (e.g., 1 to 500 for 500 entries) and unique count 1 for one winner.
For cryptographic or security-sensitive randomness, use a dedicated password or key generator.
Frequently Asked Questions
Are the numbers truly random?
The tool uses cryptographically strong randomness (e.g., Web Crypto API) where available, so outcomes are unbiased and unpredictable for normal use cases.
What does "unique" mean?
When "unique only" is enabled, each number in the result is different—no duplicates. Disable it if repeats are allowed.
Can I use this for giveaways or contests?
Yes. Set the range to match your entries (e.g., 1 to 100 for 100 entries), set count to the number of winners, enable unique, and generate. The result is a fair, random selection.
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