Random Number Generator (1–100)
Start with 1–100, choose a range preset or enter your own bounds. Generate one to 100 numbers, with an optional no-repeats setting.
Range, digits and no repeats
Range mode includes both endpoints and accepts negative integers. Digits mode produces 1–16 digit positive integers, so four digits means 1000–9999 and six means 100000–999999. No repeats affects this batch; later batches may reuse numbers.
How numbers are selected
The browser supplies random bytes. Rejection sampling maps those bytes to your exact integer range without modulo bias. A sparse shuffle handles no repeats without enumerating the whole number range.