How do I convert binary to hexadecimal?

Group binary digits into sets of 4 from right to left. Convert each group to its hex equivalent (0000=0, 1010=A, 1111=F). If the leftmost group has fewer than 4 digits, pad with leading zeros.

What is 11111111 in hexadecimal?

11111111 in binary is FF in hex. Split into 1111 1111. Each group of four 1s equals F (decimal 15). This represents 255, the maximum value of one byte.

Why is binary to hex so clean?

Because 16 is 2 to the 4th power. Each hex digit represents exactly 4 binary digits. No rounding, no remainders, just direct substitution.

Can I specify bit width?

Yes. Pad your binary with leading zeros before grouping. Binary 1010 as 8-bit is 00001010 which gives hex 0A.

What is the difference between binary, hex, and decimal?

Binary (base 2) uses 0 and 1. Decimal (base 10) uses 0-9. Hex (base 16) uses 0-9 and A-F. Each represents the same values in different notation.

How do I convert a binary file to hex?

Each byte (8 bits) converts to 2 hex digits. Hex editors like HxD display files in hex. Our tool converts individual numbers, not files.

Binary to Hexadecimal Converter — Free Online Tool

Last updated: April 20268 min readConverter Tools

Binary to hex is the easiest number base conversion. Group binary digits into sets of 4, convert each group to a hex digit, done. About 3 seconds by hand, under 1 second with a tool.

Convert Binary to Hex Instantly

Open the Number Base Converter
Select Binary (Base 2)
Type or paste your binary string
Read hex, decimal, and octal outputs

Paste binary, get hex, decimal, and octal instantly.

Convert Binary →

The Grouping Method

16 = 2⁴, so every hex digit maps to exactly 4 binary digits.

Convert 110101101011 to hex:

Group from right: 1101 0110 1011
Convert: 1101=D (13), 0110=6, 1011=B (11)
Result: D6B

Complete 4-Bit Lookup Table

Binary	Hex	Dec
0000	0	0
0001	1	1
0010	2	2
0011	3	3
0100	4	4
0101	5	5
0110	6	6
0111	7	7
1000	8	8
1001	9	9
1010	A	10
1011	B	11
1100	C	12
1101	D	13
1110	E	14
1111	F	15

Real-World Scenarios

Memory Dumps

Log shows: 0000 0100 0000 1111 0010 1010 0000 0000. Convert each nibble: 040F2A00. Now you can find that address.

Network Packets

TCP flags byte 0x12 is 0001 0010 in binary = SYN + ACK set.

Bit Manipulation

0xFF00 is readable as top 8 bits set. 0b1111111100000000 is harder to scan. Think in binary, write in hex.

Hex to Binary (Reverse)

Each hex digit expands to 4 bits. C3 = 1100 0011. Our converter does both directions.

Binary to Hex in Code

Python: hex(int('110101101011', 2)) → '0xd6b'
JavaScript: parseInt('110101101011', 2).toString(16) → 'd6b'
Bash: echo "obase=16;ibase=2;110101101011" | bc

Related: Base64 Encoder, URL Encoder (hex in %XX notation).

Binary to Hexadecimal Converter — Free Online Tool

Convert Binary to Hex Instantly

The Grouping Method

Complete 4-Bit Lookup Table

Real-World Scenarios

Memory Dumps

Network Packets

Bit Manipulation

Hex to Binary (Reverse)

Binary to Hex in Code

Related Posts

Binary to Decimal

Hex to Decimal

Decimal to Binary

Number Systems Explained