Binary to Hex Converter
Paste binary to get hexadecimal. Under the result, each group of 4 bits sits over the hex digit it becomes.
Binary to hex
How to convert binary to hex
- 01
Group the bits in fours
Start from the right. If the leftmost group is short, pad it with zeros:
101111becomes0010 1111. - 02
Look up each group
Each 4-bit group, called a nibble, is one hex digit from 0 to F. Use the table below.
- 03
Write the digits in order
0010is 2 and1111is F, so101111is 2F in hex.
Binary to hex table
All 16 nibbles. Once you know these by heart, you can read any binary as hex at a glance.
| Hex | Binary | Decimal |
|---|---|---|
| 0 | 0000 | 0 |
| 1 | 0001 | 1 |
| 2 | 0010 | 2 |
| 3 | 0011 | 3 |
| 4 | 0100 | 4 |
| 5 | 0101 | 5 |
| 6 | 0110 | 6 |
| 7 | 0111 | 7 |
| 8 | 1000 | 8 |
| 9 | 1001 | 9 |
| A | 1010 | 10 |
| B | 1011 | 11 |
| C | 1100 | 12 |
| D | 1101 | 13 |
| E | 1110 | 14 |
| F | 1111 | 15 |
Why programmers use hex
One hex digit stands for exactly four bits, so a byte is always two hex digits. 11011110 is DE, which is far easier to read, type and compare than eight 0s and 1s.
That is why hex shows up in color codes like #FF8800, memory addresses and file dumps. Paste spaced bytes and each one converts on its own, so 01101000 01101001 becomes 68 69.
Frequently asked questions
How do you convert binary to hex?
Split the binary into groups of 4 bits from the right, padding the leftmost group with zeros. Replace each group with its hex digit: `0000` is 0, `1001` is 9, `1010` is A and `1111` is F.
Why is hex used instead of binary?
Hex is binary in shorthand. Each digit is four bits, so it is four times shorter and still converts back exactly. People read hex. Computers still store bits.