How to Convert Hex to Binary (and Back)

To convert hexadecimal to binary, use a browser based converter: paste the hex value and it expands each digit into four bits. Hex is just a compact way to write binary, so the two line up cleanly, and the conversion is instant and runs on your own device.

Convert hex to binary in three steps

1. Open Hex to Binary.
2. Paste or type the hexadecimal value.
3. Copy the binary result, grouped into four bit chunks.

For the reverse, Binary to Hex packs bits back into hex, and if you need base 10, Hex to Decimal and Decimal to Hex handle it.

Why each hex digit is four bits

Hexadecimal is base 16, and 16 is two to the fourth power, so a single hex digit maps exactly to four binary digits. For example, the hex digit F is 1111 and 3 is 0011, so the hex value 3F becomes 0011 1111. That clean mapping is why programmers use hex as shorthand for long strings of bits.

Frequently asked questions

How do I convert hex to binary?

Open Hex to Binary, paste the hex value, and it expands each digit into four bits, instantly and in your browser.

How many bits is one hex digit?

Exactly four, because hexadecimal is base 16 and 16 equals two to the fourth power.

How do I convert binary back to hex?

Use Binary to Hex, which groups the bits into fours and writes each group as a hex digit.

Is my data uploaded?

No. The conversion runs in your browser, so nothing you paste is sent anywhere.