Random Number Generator
Generate random numbers within any range. Use quick presets for coin flips and dice rolls, or customize your own range.
How to Use the Random Number Generator
- Set the range -- Enter a minimum and maximum value for your random numbers.
- Choose count -- Decide how many random numbers to generate (1 to 1000).
- Configure options -- Toggle "Allow Duplicates" and "Sort Results" as needed.
- Generate -- Click the Generate button to get your random numbers.
- Use presets -- Click Coin Flip, Dice Roll, or D20 for instant common randomizations.
About Random Number Generation
Random number generation is fundamental to computing, gaming, statistics, and cryptography. This tool uses the browser's built-in cryptographic random number generator (crypto.getRandomValues()) to ensure high-quality randomness for every result. The numbers are uniformly distributed across your chosen range, meaning every value has an equal chance of being selected.
Common uses include picking lottery numbers, making random selections, running simulations, settling disputes fairly, and generating test data. The quick presets let you simulate a fair coin toss (heads or tails), a standard six-sided die, or a twenty-sided die for tabletop gaming.
Frequently Asked Questions
It uses the Web Crypto API (crypto.getRandomValues()) for secure randomness. You set a minimum and maximum range, and the tool generates uniformly distributed random integers within that range.
Yes. Set the count to any number up to 1000. You can also choose whether to allow duplicate values and whether to sort the results in ascending order.
This tool uses cryptographically strong random values from crypto.getRandomValues(). While no computer produces "true" randomness, cryptographic randomness is indistinguishable from true randomness for all practical purposes.