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Converting Between BCD, HEX, and Decimal: A Comprehensive Guide

We talk to machines with numbers, and this is the basis. Among the numeric languages are the fundamental codes such as the Binary Coded Decimal (BCD), Decimal and Hexadecimal (HEX) all of which are significant in data representation globally. Learning to convert between different numerical systems is not merely numeric gymnastics but a precondition to anyone dealing with the complexities of computing.

In this blog post, we are going to explore the magic of turning Decimal, BCD, and HEX. Such knowledge is not reserved for mathematicians or computer scientists alone, it is a handy tool for anyone who wants to understand how computers, digital devices work, or how data is stored and processed.

Before we start getting into the details on this topic, it is essential to know the importance of both BCD and hex in computing and digital systems. This will help you follow the path in this educational journey. So, whether you are just curious about tech or you are in the field, this guide is for you and will help you become confident in digital navigating.

Understanding Decimal, BCD, and HEX

Just as you have to learn the alphabet to write a book in the real world, in the digital world you have to learn Decimal, BCD, and HEX to understand the digital universe. This section will constitute as your guide to these numbering systems in a way that will make them easy to understand.

Defining Decimal, BCD, and HEX

Decimal: One of the most popular systems in the world is Decimal. It uses ten digits (0-9) and is used widely in our language. It is a base-10 system in which a power of 10 corresponds to each position.

Binary Coded Decimal (BCD): At the same time, the BCD uses a 4-bit binary code for each decimal digit. In the first place, it is a link between binary and decimal. They correspond 1-to-1 with their 4-binary bits.

Hexadecimal (HEX): HEX is a hexadecimal (base-16) numbering system composed of the digits 0-9 and A-F, with A denoting 10, B symbolizing 11, and so forth. HEX constitutes a crucial system for computing because it offers a more legible form in which to present binary values.

Significance of Each Numbering System

*Decimal: *
Decimal system is the most important of all, and that is because it is what we use in our daily lives. Every time you count money, keep time or measure distances you are dealing with decimal numbers. It’s the end product in computing; the output we see and comprehend.

Binary Coded Decimal (BCD):
BCD plays a critical role in numerous computing and engineering applications that require precise decimal representations including digital displays, calculators and real-time clock chips. It offers a specific method of dealing with decimal numbers on a computer that is basically a binary world.

Hexadecimal (HEX):
HEX is important in programming, as it condenses binary data for easier handling. It handles data in memory addresses and registers. HEX is a universal programming language that is essential for debugging and memory editing.

Having these initial insights, you made your first moves to the world of number systems. Moving on, the practicalities of converting between the above systems will be discussed. From here, we will be explaining how to convert from Decimal-to-BCD, BCD-to-Decimal, and HEX-to-Decimal.

Decimal to BCD Conversion

Digital electronics and computing start with converting a decimal number to Binary Coded Decimal (BCD) as a fundamental skill. BCD, as was said before, is a way to convert decimal numbers into binary. This is where we shall take you through the process of converting a decimal number to the BCD equivalent. Furthermore, we will give a guide with exemplary illustrations so that you can easily understand the conversion mechanism.

Step 1: BCD Representation: We must understand the BCD representation before moving on to the conversion. There are 4-bit binary codes for each decimal digit (0-9) in BCD. Take, for instance, the BCD representation of the decimal digit 7, that is, 0111.

Step 2: Divide and Rule: The way to convert a decimal number into BCD is by splitting it into its individual decimal digits. As a case, if you have the decimal number 256, you’d separate it to 2, 5 and 6.

Step 3: Now, convert each decimal digit to its BCD equivalent. Using the example above, the conversion would be:

  • The two decimals become zero zero one zero in BCD.
  • 5 in decimal is converted into 0101 in BCD.
  • Hence, 6 in decimal converts to 0110 in BCD.

Step 4: Finally, these BCD representations should be combined to get the BCD equivalent of the entire decimal number. Therefore, in our case, 256 in decimal equals to 0010 0101 0110 in BCD.

Step-by-Step Instructions

Let's walk through a practical example:

Example: Convert 123 from Decimal to BCD.

Step 1:Understand BCD Representation

  • BCD 0001 is Decimal 1.
  • 10 in BCD represents decimal 2.
  • BCD 0011 represents decimal 3.

Step 2: Divide and Conquer

  • We have three decimal digits: 1, 2, and 3.

Step 3: Convert Each Decimal Digit

  • From decimal to BCD, 1 becomes 0001.
  • 0010 in BCD is equivalent to 2 in decimal.
  • In BCD, 3 in decimal is converted to 0011.

Step 4: Combine BCD Digits

  • Combine these BCD representations to get the BCD equivalent of 123: 0001 0010 0011.

This includes the ability to convert decimal numbers to BCD which is a crucial skill especially in the world of digital displays and computing. It enables accurate conversion of decimal data on the binary space.

We suggest using Decimal to BCD Converter for people seeking a quick and convenient method of turning a decimal number into an equivalent BCD number. This online tool makes converting easier and you may save time and effort in your projects.

BCD to Decimal Conversion

Being able to convert BCD to decimal is key if you want to understand data output from a digital system or display. In this section we will guide you in the steps of converting BCD numbers back to decimal. We shall explain the method clearly for you to be able to reverse the BCD conversion effortlessly.

Converting BCD to Decimal.

Step 1: First of all, get the picture of BCD representation. Each decimal digit (0-9) is coded as a 4-bit binary. For instance, BCD code 1001 equals the digit 9.

Step 2: The conversion of BCD to decimal starts with dividing the BCD number into its respective BCD digits. A decimal digit corresponds to each group of four bits.

Step 3: Take each BCD digit and convert it to its decimal equivalent. This conversion is straightforward; convert the 4 bit BCD code to its decimal representation.

Step 4: Finally, use the decimal notation of the BCD digits to get the final decimal number.

The LambdaTest BCD to Decimal Converter Tool

The LambdaTest BCD to Decimal Converter tool is the easiest and quickest method for those who want to save time and perform quick BCD to Decimal conversions. This online tool makes the process easier and gives you correct decimal results. It is a valuable resource that will save you time and give you accurate conversions.

HEX to Decimal Conversion

The hexadecimal numbering system (HEX) is common in computing, especially when it comes to programming and digital electronics. In most instances, you may experience HEX values whose decimal equivalents need conversion. Here, we are going to walk you through the process of converting HEX numbers into decimal. We will consider the technique in detail allowing us to easily convert HEX to Decimal.

Conversion process from HEX to Decimal:

Step 1: Start by knowing about the HEX representation. HEX has sixteen symbols namely 0 1 2 3 4 5 6 7 8 9 A B C D E F where A stands for 10, B stands for 11 and so on.

Step 2: To convert HEX to Decimal, separate each HEX digit. HEX digits are most of the times written in pairs such as AB or 1F, which represent distinct values.

Step 3: Convert Each Isolated HEX Digit: Convert each isolated HEX digit into decimal form. Simple table or rule A=10, B=11, C=12, D=13, E=14, and F=15. The conversion is also the same for numerical HEX digits (0-9).

Step 4: Having converted each HEX digit to a decimal, combine them to get the total decimal number.

Converting from HEX to Decimal with the Converter Tool.

The conversion of HEX to Decimal is also made more convenient by the LambdaTest HEX to Decimal Converter tool. It reduces the conversion process and generates reliable output. It can save you time if you are a programmer working with HEX memory addresses, or just want to convert HEX values with confidence.

The knowledge of converting HEX to Decimal is one of the essential skills needed in the computing world. It enables you to work with most data representations like those used in digital systems, programming, and technical applications. This skill will make your path to the virtual world smoother.


They are not just mere theories, but applied practice. You can feel free to use these for anything in your career or for any creative endeavors you have as an individual. These conversions should make every programmer, engineer, or tech savvy person self assured enough to excel in the digital realm.

Numeracy, like any other digitization of the world, is a skill worth living forever. May it also awaken the spirit within that will drive you further to search for other avenues where this knowledge may be applied as you traverse this road, the path of technology. Nonetheless, never stop practicing, experimenting and discovering more alternatives in the modern age.

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