Binary converters
Binary to hex converter.
Binary 1111 1111 is hex FF and 1010 0011 is hex A3. Every group of 4 bits is exactly one hex digit.
Input
Result
Enter a binary number.
How to binary to hex by hand
Split the bits into groups of four starting from the right, padding the left with zeros if needed. Replace each group with its hex digit: 0000 to 1001 are 0 to 9, then 1010 is A, 1011 is B, 1100 is C, 1101 is D, 1110 is E and 1111 is F.
For 10100011: 1010 is A and 0011 is 3, so the hex value is A3.
Worked examples
| Binary | Hex |
|---|---|
1010 | A |
1111 1111 | FF |
1010 0011 | A3 |
0100 0001 | 41 |
1111 0000 1111 0000 | F0F0 |
Need text, decimal and hex side by side? Use the full binary converter, or look a character up in the ASCII table.
Binary to hex FAQ
How do you convert binary to hexadecimal?
Group the bits in fours from the right and replace each group with one hex digit (0-9, A-F). 1010 0011 becomes A3.
What is 1010 in hex?
A. Binary 1010 is decimal 10, and 10 is written A in hexadecimal.
Why do programmers use hex instead of binary?
Four bits fit in one hex digit, so a byte is always two digits. FF is far easier to read and copy than 11111111.
Is the hex output upper or lower case?
Upper case. Hex digits are not case sensitive, so ff and FF mean the same value.