How to convert decimal to/from an Octal number in Dart

• Convert Octal to Decimal in Dart:

  • using int.parseInt(String, {radix: base}) method, base as 16 .int.parse('00702', radix: 8); returns octal value 450.

• Convert Decimal to Octal in Dart:

  • use Number.toRadixString(8) method, For example: 450.toRadixString(8) returns octal value 702.

An Octal Number is a number with eight digits. The Base 8 numbering system, often known as Octal numerals, is used.

Octal numerals in Dart contain decimal numbers (0-9) such as 0,1,2,3,4,5,6,7. 42 or 3,3 are examples of Octal numbers.

Decimal Numbers are numbers having a base of 10, or numbers spanning from 0 to 9.

45 is an example of a decimal number. Learn how to convert decimal to Octal in a dart in this quick tutorial.

#How to convert decimal numbers to Octal numbers in Dart?

In this example, in dart and flutter, a decimal number with base 10 is converted to an Octal number with base 8.

In Dart, decimal numbers are represented using the int type. It provides a toRadixString() method that accepts a base parameter.

Number.toRadixString(base);

the base can be 16 for Hexa, 8 for octal,2 for binary.

Here is a code for parsing decimal to Octal example.

void main() {
  final decimalNumber = 450;
  final octalNumber = decimalNumber.toRadixString(8); // 702
  print(octalNumber);
  final fiveDigitOctalNumber = octalNumber.padLeft(5, '0');
  print(fiveDigitOctalNumber);
}

Output:

702
00702

use the padLeft method to display the octal number limit to 5 digits.

  final fiveDigitOctalNumber = octalNumber.padLeft(5, '0');

It appends left padding with zeroes.

#How to parse Octal numbers to decimal numbers in Dart?

This example converts Octal to decimal numbers in dart and flutter.

The int has the parseInt method which takes a string number and bases it on 8.

syntax

int.parseInt(String, {radix: base})

The string is a string of Octal numbers to convert. the base is a base such as 2, 8,16, etc.

Here is a code for convert Octal to decimal example

void main() {
  final decimalNumber = 450;
  final octalNumber = decimalNumber.toRadixString(8); // 9e
  print(octalNumber);
  final fiveDigitOctalNumber = octalNumber.padLeft(5, '0');
  print(fiveDigitOctalNumber);
  int decimalNumber1 = int.parseInt('00702', radix: 8);
  print(decimalNumber1);
}

Output:

702
00702
450

#Conclusion

In a summary, Learned the following examples

• Convert decimal to Octal number using the toRadixString method
• Convert Octal to decimal number using parseInt() method