Last updated on Dec 15, 2022 by Suraj Sharma

In this tutorial, you will learn how you can convert a positive number to a negative number in javaScript

To convert a positive number to a negative number in JavaScript, we use the minus sign `(-)`

.

```
let x = 25;
x = -x;
```

We can convert a string to a number with a negative sign using the `parseInt()`

or `parseFloat()`

function and then use the negation operator to change its sign.

```
let str = "5";
let x = -parseInt(str); // -5
let y = -parseFloat('2.23'); // -2.23
```

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**Suraj Sharma** is a Full Stack Software Engineer. He holds a B.Tech degree in Computer Science & Engineering from NIT Rourkela.