How do you convert binary to hexadecimal?

Group the binary digits in fours from the right, pad the left group if necessary, and replace each group with one hexadecimal digit.

Why does one hex digit equal four binary bits?

Hexadecimal has 16 possible digits and four binary bits have 16 possible patterns, because 2 to the fourth power is 16.

Binary to Hexadecimal Converter

Q: What is 1111 binary in hexadecimal?

1111 binary is F in hexadecimal.

Convert a binary integer to hexadecimal with exact arithmetic. The result shows how the bits split into four-bit groups and how each group becomes one hex digit.

Written and checked by TheToolNet Editorial Team · Last reviewed: September 19, 2026 · How we check conversion tools

Direct answer

1011 0101₂ → B 5₁₆ → B5₁₆

Group binary digits in fours from the right. Because 16 = 2⁴, every four-bit group maps exactly to one hexadecimal digit.

Convert binary to hexadecimal

Enter an unsigned binary integer. The converter accepts spaces, underscores, and an optional 0b prefix.

How to convert binary to hexadecimal

Start at the binary point's left side—or at the final bit for an integer—and group digits in sets of four moving left.
If the leftmost group has fewer than four bits, add leading zeros.
Replace each group with the matching hexadecimal digit from 0 through F.

Binary to hexadecimal mapping table

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

Binary to hexadecimal example

For binary 110101100, pad and group it as 0001 1010 1100. The groups map to 1, A, and C, so 110101100₂ = 1AC₁₆. Both representations equal 428 in decimal.

If you need the base-10 value instead, use the binary-to-decimal steps.

Scope and limitations

The converter handles unsigned whole numbers up to 512 binary digits. It does not treat the first bit as a sign bit and does not decode two's-complement values. Binary fractions require grouping on both sides of the binary point and are outside this tool's current scope.

Frequently asked questions

Why group binary digits in fours?

Four bits have 16 patterns, exactly matching the 16 hexadecimal digits 0–F.

Which side do I start grouping from?

For whole numbers, start at the rightmost bit and move left. Add zeros only to the leftmost incomplete group.

What is 1111 binary in hexadecimal?

It is F. The bit pattern 1111 equals decimal 15, represented by F in hexadecimal.