# Convert a Negative Number to Positive in JavaScript Last updated: Oct 22, 2021 Photo from Unsplash

## Convert a Negative Number to Positive#

To convert a negative number to a positive number, call the `Math.abs()` method passing it the number as a parameter, e.g. `Math.abs(-10)`. When supplied with a negative number, the `Math.abs` method is guaranteed to return a positive number.

index.js
```Copied!```console.log(Math.abs(-5)); // 👉️ 5
console.log(Math.abs(-5.5)); // 👉️ 5.5
console.log(Math.abs(-0)); // 👉️ 0
console.log(Math.abs(1.5)); // 👉️ 1.5
console.log(Math.abs('-3.5')); // 👉️ 3.5
``````

We used the Math.abs method to convert negative to a positive numbers.

The only parameter the method takes is the number we want to get the absolute value of.

The method returns the absolute value of a number, in other words it returns the number's distance from zero.

The `Math.abs` method returns the provided number if it's positive or zero and the negation of the number if it's negative.

When you pass a negative number as a parameter to the `Math.abs` method, it always returns a positive number.

You might see examples online, where the number is prefixed with a minus `-` to invert its sign.

index.js
```Copied!```const num1 = -5;
const num2 = 5;

console.log(-num1); // 👉️ 5
console.log(-num2); // 👉️ -5
``````

However, all this does is, it inverts the number's sign, it doesn't necessarily convert negative numbers to positive, it goes both ways.

On the other hand, the `Math.abs` method is guaranteed to give you a positive number, no matter if you pass it a positive or a negative number. 