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Convert Hexadecimal to Decimal

In this section, you will learn to change hexadecimal number into decimal.

Convert Hexadecimal to Decimal


In this section, you will learn to change hexadecimal number into decimal. The java.lang package provides the functionality to convert a hexadecimal number into decimal.

Code Description:

This program takes a hexadecimal number at console and converts it into a decimal number using parseInt() method. This method parses the string value as a signed integer in the radix specified by the second argument. Here the second argument is 16  to convert a hexadecimal into a decimal number. 

This method takes two arguments: hexadecimal and 16. It converts a hexadecimal number into a decimal number. 

Here is the code of this program:

import java.lang.*;

public class  HexadecimalToDecimal{
  public static void main(String[] argsthrows IOException{
  BufferedReader bf = new BufferedReader(new InputStreamReader(;
  System.out.println("Enter the Hexadecimal number:");
  String str= bf.readLine();
  int i= Integer.parseInt(str,16);
  System.out.println("Decimal:="+ i);

Download this program:

Output  of this program.

C:\corejava>java HexadecimalToDecimal
Enter the Hexadecimal number:


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  Reload Image
June 19, 2011
cs/it hehe

xplain it sir please asap ...
November 30, 2011
regarding code

can u explain clearly how its converts?????
gerald alcedera
January 10, 2012
object oriented programming

how will you determine the legal hexadecimal if the user inputed an ilegal hexadecimal or decimal?
May 12, 2012
Nice Java solutions

Your Java solutions are always straight and simple. It helps a lot. Thanks a lot to Rose India team. Thanks, Birendra