Java.math.BigInteger.floatValue() Method



The java.math.BigInteger.floatValue() converts this BigInteger to a float. This conversion is similar to the narrowing primitive conversion from double to float .

If this BigInteger has too great a magnitude to represent as a float, it will be converted to Float.NEGATIVE_INFINITY or Float.POSITIVE_INFINITY as appropriate. Even when the return value is finite, this conversion can lose information about the precision of the BigInteger value.


Following is the declaration for java.math.BigInteger.floatValue() method

public float floatValue()

Specified by

floatValue in class Number


  • NA

Return Value

This method returns this BigInteger converted to a float.


  • NA


The following example shows the usage of math.BigInteger.floatValue() method

package com.tutorialspoint;

import java.math.*;

public class BigIntegerDemo {

public static void main(String[] args) {

        // create 2 BigInteger objects
	BigInteger bi1, bi2;

	// create 2 Float objects
	Float f1, f2;

	// assign values to bi1, bi2
	bi1 = new BigInteger("123");
	bi2 = new BigInteger("-123");

	// assign float values of bi1, bi2 to f1, f2
	f1 = bi1.floatValue();
	f2 = bi2.floatValue();

	String str1 = "Float value of " + bi1 + " is " +f1;
	String str2 = "Float value of " + bi2 + " is " +f2;

	// print f1, f2 values
	System.out.println( str1 );
	System.out.println( str2 );

Let us compile and run the above program, this will produce the following result:

Float value of 123 is 123.0
Float value of -123 is -123.0