Random Number Generator

Generate random integers within a range, with optional unique results.

Processed locally in your browser. Your input is not uploaded.

How to use Random Number Generator

Choose inclusive minimum and maximum bounds and generate up to 1,000 integers. Negative bounds are supported, and duplicates can be disabled.

Details and limits

Integer sampling uses crypto.getRandomValues with rejection sampling to avoid modulo bias. Unique sampling remains bounded even when selecting an entire range. Bounds must be safe JavaScript integers; decimal random numbers are not included.

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