Free Random Number Generator — Custom Range, Secure

This generator produces cryptographically secure random numbers using your browser's built-in Web Crypto API (crypto.getRandomValues()). Unlike Math.random(), which uses a pseudo-random algorithm that can be predicted with enough samples, crypto.getRandomValues() draws from hardware-sourced entropy and is suitable for security-sensitive use cases.

Set the minimum and maximum values to any integers — including negative numbers — and choose how many results to generate at once (up to 100). All generation happens entirely in your browser; no numbers are sent to any server.