Python Program to Converter a Decimal to Binary

Posted in Python Tutorial

Updated on Nov 22, 2024

By Mari Selvan

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⏳ 4 mins

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Python Program to Converter a Decimal to Binary

Photo Credit to CodeToFun

🙋 Introduction

In the world of programming, converting numbers from one base to another is a common and essential task. One interesting conversion is from decimal to binary. Decimal is the base-10 number system, and binary is the base-2 system.

Converting a decimal number to its binary equivalent involves representing the decimal value using only the digits 0 and 1.

In this tutorial, we'll explore a python program that efficiently converts a decimal number to its binary representation.

📄 Example

Let's dive into the python code that achieves this functionality.

decimal_to_binary.py

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# Function to convert decimal to binary
def decimal_to_binary(decimal_number):
    binary_number = []

    # Convert decimal to binary
    while decimal_number > 0:
        binary_number.append(decimal_number % 2)
        decimal_number = decimal_number // 2

    # Print binary number in reverse order
    print("Binary equivalent:", end=" ")
    for digit in reversed(binary_number):
        print(digit, end="")
    print()

# Driver program
if __name__ == "__main__":
    # Replace this value with your desired decimal number
    decimal_number = 15

    # Call the function to convert decimal to binary
    decimal_to_binary(decimal_number)

💻 Testing the Program

To test the program with a different decimal number, simply replace the value of decimalNumber in the main function.

Output

Binary equivalent: 1111

Run the program to see the binary equivalent.

🧠 How the Program Works

The program defines a function decimal_to_binary that takes a decimal number as input and prints its binary equivalent.
Inside the function, it uses a list (binary_number) to store the binary digits.
It iterates through the process of dividing the decimal number by 2 and appending the remainder until the decimal number becomes 0.
The binary digits are printed in reverse order.

🧐 Understanding the Concept of Decimal to Binary

Before delving into the code, let's briefly understand the binary number system. In binary, each digit represents a power of 2, starting from the rightmost digit as 2^0, then 2^1, 2^2, and so on.

Converting a decimal number to binary involves repeatedly dividing the decimal number by 2 and recording the remainders in reverse order.

For example, the decimal number 15 is equivalent to the binary number 1111.