Password Generator
Generate cryptographically secure random passwords using crypto.getRandomValues() with length slider, character set toggles, and entropy strength meter.
Random Number Generator
Unbiased CSPRNGGenerate single or multiple random integers within any custom minimum and maximum range using unbiased cryptographic sampling and unique draw mode.
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How to Use Random Number Generator
- 1Enter your Minimum Value and Maximum Value (integers up to ±1,000,000,000).
- 2Choose to generate a Single Number or Multiple Numbers (specify count up to 1,000).
- 3Toggle 'Unique Numbers Only (No Repeats)' if drawing lottery/raffle numbers without replacement.
- 4Click 'Generate Numbers' and copy the results to your clipboard.
Key Features & Privacy
- ✦Uses `crypto.getRandomValues()` with 32-bit rejection sampling so every integer in `[Min, Max]` has an identical mathematical probability.
- ✦Validates that `Min <= Max` and checks that `Count <= (Max - Min + 1)` when Unique Numbers mode is active.
- ✦Displays summary stats (Count, Sum, Average, Min, Max) alongside the generated numbers.
- ✦Optional ascending sort toggle for multi-number draws.
Frequently Asked Questions
What happens if I ask for 10 unique numbers between 1 and 5?
Because there are only 5 distinct integers in the range `[1, 5]`, requesting 10 unique numbers is impossible. The tool validates this upfront and displays a helpful error message.
How does unbiased range sampling work?
Instead of using `randomUint32 % range` (which slightly favors smaller numbers when `range` does not divide `2^32`), rejection sampling discards values above the largest multiple of `range`, guaranteeing a uniform distribution.
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