Hex to Binary Converter

Convert hexadecimal (base-16) values into their binary (base-2) representation — showing the full 8-bit binary string for each hex byte.

What Does This Tool Do?

Hexadecimal and binary are both number systems used extensively in computing. Hex is more compact (one hex digit = 4 binary bits), while binary shows the actual bit-level representation. This tool converts hex values to their binary equivalents, useful for understanding data at the bit level.

Key Features

🔢

Padded Binary

Each hex byte is shown as a full 8-bit binary string with leading zeros.

📋

Space Separated

Multiple hex values are converted simultaneously, space-separated.

⚡

Instant

Converts immediately as you type or click.

✅

Hex Flexible

Accepts hex with or without 0x prefix, with or without spaces.

How to Use This Tool

Enter your hex values (space-separated for multiple values).
Click Convert to see the binary equivalent.
Copy the binary output for use in your project.

How It Works

Each hex value is parsed using parseInt(hex, 16) to convert it to a decimal integer, then .toString(2) converts it to binary. The result is padded with leading zeros using .padStart(8, "0") to ensure each byte is represented as a full 8 bits.

Common Use Cases

💡 Computer Science Education

Learn how hexadecimal and binary relate to each other and to computer memory.

💡 Network & Protocol Analysis

Convert hex packet data to binary to analyze individual bits and flags.

💡 Bit Manipulation

Convert hex values to binary to understand bitmasks and bitwise operations.

💡 Embedded Systems

Work with binary representations of hex values in embedded and low-level programming.

Frequently Asked Questions

How many binary digits does one hex digit represent?

One hexadecimal digit represents exactly 4 binary bits (since 16 = 2⁴). Two hex digits (one byte) = 8 binary bits.

What is the binary value of hex FF?

FF in hex is 255 in decimal, which is 11111111 in binary — all 8 bits set to 1.

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