Binary to Hexadecimal
Convert a binary number to its hexadecimal (base-16) value.
About the Binary to Hexadecimal converter
This tool converts a binary number into hexadecimal, its base-16 equivalent. The two bases line up neatly because every group of four binary digits is exactly one hex digit, so 11111111 groups as 1111 1111 and becomes FF. Hex is the standard compact view of binary data in code, hex editors, and memory dumps.
How to use it
- Enter a binary number using only 1s and 0s.
- The hexadecimal equivalent appears immediately.
- Copy the hex result for use in code, CSS, or a hex editor.
A common use is collapsing a long bit pattern into the short hex form developers prefer, for example turning a byte into a two-character pair. The converter treats the input as an unsigned whole number and handles long bit strings exactly, so large values convert without rounding. It does not interpret a leading bit as a sign. All work happens in your browser, so your input is never uploaded.
Frequently asked questions
Why does four binary digits equal one hex digit?
Hexadecimal is base-16 and 16 equals 2 to the fourth power, so each hex digit maps to exactly four binary digits. Binary is grouped in fours from the right to read off the hex value.
How many hex digits does one byte produce?
A byte is eight bits, which is two groups of four, so one byte becomes two hex digits, ranging from 00 to FF.
Does it support very long binary numbers?
Yes. Exact integer arithmetic is used, so long bit strings including 64-bit values convert without precision loss.
Is the binary I enter uploaded?
No. The conversion runs entirely in your browser, so nothing you type leaves your device.