Random Number Generator
Calculate random number instantly in your browser.
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What this tool does
Calculate random number instantly in your browser. Independent values, duplicates allowed. Change inputs or use Generate again for a new sample.
How to use the Random Number Generator
- Enter or select minimum integer.
- Enter or select maximum integer.
- Enter or select count.
- Read the calculated result; change any measurement to compare alternatives.
Formula
uniform cryptographic uint32 sampling with rejection to avoid modulo bias
- min
- Minimum integer
- max
- Maximum integer
- count
- Count
Independent values, duplicates allowed. Change inputs or use Generate again for a new sample.
Worked example
For random number generator, the following measurements illustrate the exact method: Minimum integer: 1; Maximum integer: 100; Count: 10.
Inputs
- Minimum integer1
- Maximum integer100
- Count10
Result
- Random resultA fresh cryptographic result is generated locally in the calculator above.
Results explained
- Random integers
- Random integers from the formula above. Independent values, duplicates allowed. Change inputs or use Generate again for a new sample.
Frequently asked questions
uniform cryptographic uint32 sampling with rejection to avoid modulo bias
Independent values, duplicates allowed. Change inputs or use Generate again for a new sample.
Where mathematically meaningful, yes. Fields specify permitted ranges and undefined operations display an error.
Exact integer calculations use safe integers; decimal calculations use browser floating point, so small rounding differences can occur.
All values remain in your browser and are never uploaded.