Generate one or many random numbers within any range
💡 Why This Matters Raffles, games, sampling, and decision-making all sometimes call for a genuinely unpredictable number. This tool generates one instantly, with options for a custom range, multiple results, and no duplicates.
Computers can't generate truly random numbers on their own — they use mathematical formulas (pseudorandom generators) seeded by things like the current time, which is unpredictable enough for everyday use but technically deterministic if you knew the seed.
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This tool uses your browser's built-in pseudorandom number generator, scaled and shifted to fall within your chosen minimum and maximum (inclusive of both endpoints), then rounded to a whole number. When generating multiple numbers with the "unique values only" option checked, each new number is checked against previous results and re-rolled if it's a duplicate.
Each number has an equal chance of appearing within your specified range — there's no bias toward the middle, the edges, or any particular value. With "unique values only" checked, results behave like drawing without replacement (think raffle tickets pulled from a bag); unchecked, results behave like independent rolls (think repeated dice rolls, where the same number can come up twice).
This generator is unpredictable enough for games, raffles, and everyday decision-making, but it is not cryptographically secure — don't use it to generate passwords, encryption keys, or anything where a determined attacker guessing the underlying algorithm would matter. If you request more unique numbers than fit in your range (e.g., 10 unique numbers between 1 and 5), that's mathematically impossible and will be flagged.
Use this for picking raffle or contest winners, assigning random team or group numbers, generating quick sample data, settling a decision fairly, or simulating dice rolls and other games of chance.
Example: Set Minimum to 1, Maximum to 100, How Many to 5, with Unique Values checked. You'll get 5 different whole numbers, each somewhere between 1 and 100 inclusive, with no repeats — perfect for drawing 5 raffle winners from 100 tickets.
It uses your browser's built-in pseudorandom number generator, which is unpredictable enough for everyday use — games, raffles, sampling — but not suitable for cryptography or high-stakes security purposes.
When checked, no number will repeat across your generated results — useful for picking multiple raffle winners or lottery-style draws where a duplicate wouldn't make sense.
Yes, though the result will always just be that number — there's no randomness left in a range of one.
Generating several at once is useful for drawing multiple raffle entries, creating sample data, assigning random group numbers, or running quick simulations.