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JavaScript Math round() Method

Last Updated : 16 Sep, 2024
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The JavaScript Math.round() method rounds a number to the nearest integer. It rounds up for decimal values of 0.5 and higher, and down otherwise.

Syntax:

Math.round(value);

Parameters:

  • value: It is the number that you want to round off.

Return Value:

The Math.round() method returns the value of the given number rounded to the nearest integer.

Example 1: To round off a number to its nearest integer. 

javascript 
let round =Math.round(-5.8);
console.log("Number after rounding : " + round);

Output
Number after rounding : -6

Example 2: The Math.round() method itself rounds off a negative number when passed as a parameter to it. To round off a negative number to its nearest integer, the Math.round() method should be implemented in the following way: 

javascript 
let round =Math.round(-5.8);
console.log("Number after rounding : " + round);

Output
Number after rounding : -6

Example 3: The below program shows the result of the Math.round() method when the parameter has ".5" in decimal. 

javascript 
let round =Math.round(-12.5);
console.log("Number after rounding : " + round);
let round1 =Math.round(12.51);
console.log("Number after rounding : " + round1);

Output
Number after rounding : -12
Number after rounding : 13

We have a complete list of Javascript Math Objects methods, to check those please go through this Javascript Math Object Complete reference article.

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Javascript Math sign() Method

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Shubrodeep Banerjee
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