Random Number Generator
Generate random numbers in any range, with or without repeats
100% free. Runs entirely in your browser - your files and data never leave your device and nothing is uploaded to any server.
About this tool
Generate random numbers within any range you specify, with or without repeats allowed - useful for raffles, random sampling, games, or any situation needing a genuinely random number pick rather than one you choose yourself.
How to use this tool
- Set min and max rangeChoose numeric boundaries for the random draw.
- Pick quantity and repeat ruleGenerate one or many numbers with or without duplicates.
- Run generatorProduce random results instantly from selected constraints.
- Copy or save outputUse generated numbers for raffles, sampling, or classroom tasks.
Running a fair draw with random numbers
Number your entries from 1 upwards, set the range to match, and generate as many numbers as you need prizes with repeats turned off, so no entry can win twice. Do the draw on screen or record it so participants can see it was random.
For a survey sample, number the people on your list, generate the sample size you need without repeats, and contact the people whose numbers come up.
Key features
- Fast randomization for fair selection tasks.
- Supports custom ranges and multi-number output.
- No-repeat mode prevents duplicate draws when needed.
- Useful for games, teaching, testing, and analytics workflows.
Common uses
- Selecting random winners in a giveaway.
- Creating random test IDs or sample datasets.
- Picking random seat/order numbers for activities.
- Simulating lottery-style draws for demos.
Tips for better results
- Validate range size when using no-repeat mode.
- Document seed-independent results if audit trail matters.
- Use narrow ranges for classroom quick exercises.
- Re-run generator for independent rounds rather than reusing old output.
Mistakes to avoid
- Requesting more unique numbers than range can provide.
- Treating one draw as statistically representative sample.
- Forgetting inclusive boundaries when interpreting results.
- Manually editing random output and calling it unbiased.
Frequently asked questions
Yes - toggle the "no repeats" option to generate a set of unique random numbers, useful for things like drawing multiple unique raffle numbers without any duplicate picks.
It uses your browser's random number generation, which is suitable for everyday random selection needs like games, raffles, and general randomization tasks.
Yes - specify any range you need (like 1-100, or 1-6 for a die), rather than being limited to a fixed default range.
Give each entry a number, set the range from 1 to the number of entries, turn off repeats and draw. Recording the draw or doing it on screen in front of people makes the result easy to trust.
Number your list, generate as many unique numbers as you need sample members, and take the matching rows. That gives every person the same chance of being selected.
Yes, it will generate unique numbers in a lottery's range. Random picks have exactly the same odds as chosen numbers, though they are less likely to be shared with other players who pick birthdays.