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Use this free Hex to Binary Converter to quickly convert hexadecimal values (base 16) to binary values (base 2). Just type or paste your hex number, and the tool instantly shows the equivalent binary number – no manual calculation, no risk of mistakes.
It is ideal for programmers, embedded developers, network engineers, security specialists, and students who need a fast, reliable way to translate hex numbers into binary for debugging, analysis, or learning.
The Hex to Binary Converter takes any valid hexadecimal input and returns the corresponding binary representation:
Behind the scenes, each hex digit is mapped to four binary digits (bits). The tool automates this mapping so you can focus on reading and understanding the result, not doing bit math by hand.
FF, 3A7C, 0A1BTip: If your hex value includes a prefix like 0xFF, remove the 0x and enter only the hex digits (FF) into the converter.
Hexadecimal (often shortened to hex) is a number system with base 16. It uses:
0–9 to represent values 0–9A–F (or a–f) to represent values 10–15Hex is widely used in computing because it is compact and maps cleanly to binary. For example, memory addresses, machine code, and color codes like #FF9900 are typically written in hex.
Binary is the native language of computers. It uses only:
0 – off / false1 – on / trueEvery bit represents one power of two. A group of 8 bits is called a byte, e.g. 01001010.
Each single hex digit corresponds to exactly four binary digits:
| Hex | Binary |
|---|---|
| 0 | 0000 |
| 1 | 0001 |
| 2 | 0010 |
| 3 | 0011 |
| 4 | 0100 |
| 5 | 0101 |
| 6 | 0110 |
| 7 | 0111 |
| 8 | 1000 |
| 9 | 1001 |
| A | 1010 |
| B | 1011 |
| C | 1100 |
| D | 1101 |
| E | 1110 |
| F | 1111 |
To convert a longer hex number by hand, you would:
The Hex to Binary Converter automates this process for you, instantly and accurately.
Example 1 – Convert 2F to binary:
2 → 0010F → 1111Result: 2F (hex) = 00101111 (binary)
Example 2 – Convert 3A7C to binary:
3 → 0011A → 10107 → 0111C → 1100Result: 3A7C (hex) = 0011101001111100 (binary)
When inspecting memory dumps, stack traces, or machine instructions, you may see values in hex. Converting them to binary helps you:
Web colors are written as hex (#RRGGBB). Converting hex channels to binary can help when:
Network packets and binary protocols are often displayed as hex streams. Translating them to binary makes it easier to:
Firmware, registers, and microcontroller configuration often rely on hex. Being able to switch quickly between hex and binary lets you:
If you need more than just hex-to-binary conversion, you can use the general base converter and related tools on CodersTool:
When dealing with text encodings and raw bytes, you may also need:
Yes. You can use either uppercase (A–F) or lowercase (a–f) hex digits. They are treated the same.
In most cases, yes. The converter is designed to work with long hex strings such as memory dumps or large IDs. Extremely large inputs may be limited by your browser’s performance, but typical development use cases work fine.
A valid hex number can contain digits 0–9 and letters A–F / a–f. If you enter other characters, the result may be invalid or the tool may ignore them. For best results, remove spaces, prefixes (0x), or non-hex characters before converting.
Yes. All CodersTool converters, including the Hex to Binary Converter, are free to use in your browser with no registration required.
Whenever you need to analyze bits, check flags, or understand data at the lowest level, visit https://www.coderstool.com/hex-binary-converter and let the Hex to Binary Converter do the heavy lifting for you.
Some people, when confronted with a problem, think ‘I know, I’ll use regular expressions.’ Now they have two problems.
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