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Hex to Binary Converter

Free online tool to convert hexadecimal numbers to binary format instantly. Fast, accurate, and runs entirely in your browser.

Hex to BinaryHex to OctalHex to DecimalHex to Text
Hex to Binary
Binary to Hex
Input
1
Lines: 1Chars: 0Size: 0 B

Configurations

Input values are parsed client-side. Real-time updates occur as you type. Multiple entries can be converted at once using spaces or newlines.

Output

Convert Hexadecimal (Base-16) to Binary (Base-2) Online

Instantly convert base-16 hexadecimal numbers to base-2 binary strings. Our free online Hex to Binary Converter is designed to streamline workflows for systems programmers, security researchers, and students. Grouping and converting hex characters to bit arrays is extremely easy and fast.

The 4-Bit Expansion Method (Nibbles)

Because 16 is a power of 2 (2^4), direct base conversions do not require long division. Instead, each hexadecimal character corresponds directly to a 4-bit binary segment, commonly called a nibble. By expanding each hex character into its 4-bit equivalent (e.g. F to 1111, 0 to 0000), you get the binary code quickly.

How to Convert Hex to Binary (Step-by-Step)

  1. Separate Characters: Take the hexadecimal string and separate it into individual characters.
  2. Expand to 4-Bits: Convert each character to its equivalent 4-bit binary value (e.g. A becomes 1010, 3 becomes 0011).
  3. Combine: Concatenate the 4-bit segments together in order to build the binary string.
  4. Format: Remove any leading zeros from the final output if a clean sequence is desired.

High-Precision Mapping

Uses high-performance bitwise mapping logic to handle arbitrary-length hexadecimal streams without crashing.

Memory Analysis

Perfect for software engineers analyzing core memory dumps, network packets, and CPU instructions.

Absolute Privacy

All code processes in your browser. No data ever leaves your device or is transmitted over the network.

Hex to Binary Reference Index

Hex SymbolBinary (4 Bits)Decimal Equivalent
000000
910019
A101010
B101111
C110012
D110113
E111014
F111115

Frequently Asked Questions (FAQ)

To manually convert hex to binary, replace each hexadecimal character with its corresponding 4-bit binary value. For example, to convert the hex string 3B: 3 becomes 0011 and B becomes 1011, which combined yields the binary string 00111011 (or 111011 after stripping leading zeros).
Each hex character converts to exactly four binary bits because the hexadecimal system is base-16, and 16 is 2 raised to the power of 4. This mathematical relationship means there are exactly 2^4 (16) unique configurations of four binary bits, mapping perfectly to the hex characters 0-9 and A-F.
Yes, Fuhut is completely secure. All conversion operations occur client-side in your local browser sandbox. No input hex strings, binary outputs, or logs are transmitted to Fuhut servers.