JavaScript - random int value

In this short article, we would like to show to randomize int value using JavaScript.

Note: as int value we understand signed 32 bits integer value (from -2147483648 to 2147483647).

Quick solution:

const value = Math.floor(4294967296 * Math.random()) - 2147483648;

Reusable function

// ONLINE-RUNNER:browser;

const randomInt = () => Math.floor(4294967296 * Math.random()) - 2147483648;


// Usage example:

console.log(randomInt());  //  -639505982
console.log(randomInt());  //  1018139768
console.log(randomInt());  // -1390047344

See also

1. JavaScript - random boolean value

2. JavaScript - random byte value

3. JavaScript - random short value

4. JavaScript - random long value