Java BigDecimal to Double

In this post, we will see how to convert BigDecimal to Double in java.

Table of Contents

Convert BigDecimal to Double in Java
BigDecimal to double with 2 decimal places

Convert BigDecimal to Double in Java

You can simple use BigDecimal’s doubleValue() to convert BigDecimal to Double in java.

package org.arpit.java2blog.entry;

import java.math.BigDecimal;

public class BigDecimalToDoubleMain {

public static void main(String[] args) {

BigDecimal bigDecimal = new BigDecimal("22.2345");

Double doubleVal=bigDecimal.doubleValue();

System.out.println("Double value: "+doubleVal);

}

Output:

Double value: 22.2345

BigDecimal to double with 2 decimal places

If you want to restrict double to 2 decimal places, you can use BigDecimal’s setScale() method. You can use RoundMode to specify rounding behavior.

package org.arpit.java2blog.entry;

import java.math.BigDecimal;

import java.math.RoundingMode;

public class BigDecimalToDoubleRoundMain {

public static void main(String[] args) {

double d = 2.3262;

BigDecimal bigDecimal=new BigDecimal(d);

bigDecimal = bigDecimal.setScale(2,RoundingMode.HALF_DOWN);

Double doubleVal=bigDecimal.doubleValue();

System.out.println("Double upto 2 decimal places: "+doubleVal);

// Rounding down

BigDecimal bigDecimal1=new BigDecimal(d);

bigDecimal1 = bigDecimal1.setScale(2,RoundingMode.DOWN);

System.out.println("Double upto 2 decimal places - RoundingMode.DOWN: "+bigDecimal1.doubleValue());

// Rounding up

BigDecimal bigDecimal2=new BigDecimal(d);

bigDecimal2 = bigDecimal2.setScale(2,RoundingMode.UP);

System.out.println("Double upto 2 decimal places - RoundingMode.UP: "+bigDecimal2.doubleValue());

}

Output:

Double upto 2 decimal places: 2.33
Double upto 2 decimal places – RoundingMode.DOWN: 2.32
Double upto 2 decimal places – RoundingMode.UP: 2.33

That’s all about Java BigDecimal to Double.

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Java BigDecimal to Double

Convert BigDecimal to Double in Java

Further reading:

Java BigDecimal to String

BigDecimal round

BigDecimal to double with 2 decimal places

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