Random Number Generator
Generate a random number in any range.
How to use this tool
- Enter minimum and maximum in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your random number and the full breakdown beneath it.
Generate a random number in any range.
How it works
The Random Number Generator produces a single random integer within a range you specify. Enter a minimum and maximum value, click Generate, and an unbiased random number within that inclusive range is returned.
The generator uses the browser's cryptographically secure random source, so the output is suitable for games, raffles, random sampling, and decision-making — anywhere you need genuine randomness rather than a predictable sequence.
Common uses include picking a random item from a numbered list, selecting a lottery ticket number, assigning random groups in a classroom or workshop, simulating a spinner or wheel, or running a quick A/B test coin toss.
You can regenerate as many times as you like. Each result is independent; past results have no influence on future ones.
Worked example
Pick a random winner from a numbered list of 50 entries
- Set Minimum to 1.
- Set Maximum to 50.
- Click Generate.
- Find the entry matching the displayed number — that is the winner.
The tool displays '37' — entry number 37 wins.
Common mistakes to avoid
- Setting minimum and maximum to the same value — the tool will always return that number, which is not random.
- Expecting the tool to avoid repeats across multiple generations — it does not track history.
- Confusing this with a random list or shuffle tool — it generates one number at a time, not a shuffled sequence.
Key terms
- Inclusive range
- Both the minimum and maximum values can be the result. For example, a range of 1 to 6 can return 1, 2, 3, 4, 5, or 6.
- Cryptographically secure
- Random values that cannot be predicted from previous values, generated by a source designed for security rather than statistical simulation.
Frequently asked questions
- Can I generate decimal (float) numbers?
- This tool generates integers only. For decimal numbers, multiply the result by a factor (e.g., generate 1-1000 and divide by 10 to get one decimal place).
- Can the same number appear twice in a row?
- Yes. Each generation is independent. Repetitions are a normal property of random processes.
- What is the maximum range I can use?
- The range can be as large as the JavaScript safe integer limit (approximately 9 quadrillion), but practically any range you are likely to need works fine.