Shany  Jenkins

Shany Jenkins

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How to Round Floating-Point Numbers in JavaScript?

Oftentimes, we’ve to round floating-point numbers in our JavaScript web apps.

In this article, we’ll look at how to round floating-point numbers in JavaScript.

Number.prototype.toFixed

JavaScript numbers have the toFixed method that returns a string version of the number rounded to the number of decimal places we passed in as the argument.

For instance, we can write:

const rounded = Number((6.6756854).toFixed(1));
console.log(rounded)

Then rounded is '6.7' since we passed in 1 to toFixed .

This makes it returns a string rounded to 1 decimal place.

#javascript

How to Round Floating-Point Numbers in JavaScript?