Round Double To Nearest Hundredth

By

John Dalesandro

– March 20th, 2009Posted in: Computing

Here are a few ways to round a double in Java to the nearest integer, tenths, hundredths, or thousandths decimal place.

double x = 0.0d;
double y = 0.0d;
 
// Double rounded to the nearest integer.
y = (int) (x + 0.5);
 
// Double rounded to the nearest tenth.
y = ((int) ((x * 10) + 0.5)) / 10;
 
// Double rounded to the nearest hundredth.
y = ((int) ((x * 100) + 0.5)) / 100;
 
// Double rounded to the nearest thousandth.
y = ((int) ((x * 1000) + 0.5)) / 1000;

Tags: Java, Source Code

About John Dalesandro

My name is John Dalesandro and I am a software engineer based in New Jersey. My experience covers all aspects of the software development life cycle with a primary focus on enterprise web applications.

1 Comment

1. rayhan

   Posted September 3, 2010 at 12:07 PM

   It worked for me with a minor modification. In order to work it properly all the divisors has to be doubles instead of integers. Adding a decimal point and a zero at the end of all these divisors (e.g., 10.0, 100.0, 1000.0) worked for me.

   Thanks and keep up the good work!