What Is the Random Number Generator?
The Randora Random Number Generator produces truly random numbers — integers or decimals — in any range you specify, up to 100 numbers at once. It uses JavaScript's Math.random() function seeded fresh on each call, ensuring each result is statistically independent. Whether you need one number between 1 and 6 (a dice roll), 20 numbers between 1 and 1000 for a lottery draw, or decimal values for statistical sampling, this tool handles it instantly in your browser.
Use Cases
Common uses include picking random winners from a numbered list, generating lottery or raffle numbers, creating test data sets, teaching probability and statistics, running classroom activities, making impartial decisions, tabletop gaming, and generating random seeds for other purposes. The "No Duplicates" mode ensures every number in your set is unique — ideal for draws where each entry should only win once.
Integer vs Decimal Mode
Integer mode rounds every result to the nearest whole number. Decimal mode produces floating-point numbers with up to 2 decimal places — useful for generating sample data, simulating measurements, or any application requiring fractional values. Both modes respect the same Min and Max bounds.
Sorted Output
When generating multiple numbers, enable the "Sorted" option to receive results in ascending order. This makes it easier to scan large sets and spot patterns. The order toggle doesn't affect randomness — it only rearranges the result display after generation.
Is the Generator Truly Random?
The generator uses the browser's built-in pseudo-random number generator (PRNG), which is cryptographically adequate for most non-security purposes. For security-critical applications (such as cryptographic keys), a dedicated CSPRNG tool is recommended.