Random Number Generator
Generate a random integer or decimal within a range.
Calculations run in this browser. Values are not submitted to the server.
Result
Formula and assumptions
Integer mode uses rejection-sampled browser cryptographic randomness. Decimal mode uses 53 random bits; the maximum endpoint is exclusive.
Example values are shown in the input placeholders. Results use browser number precision unless the tool uses exact integer arithmetic. Check units and assumptions before using a result.