Binary-HEX Conversion

Two-way conversion between binary and hexadecimal (HEX)

Features

Mutually convert binary and hexadecimal

Radix-convert bit sequences and HEX values in both directions

Choose uppercase or lowercase

Specify the A–F notation of hexadecimal to suit your purpose

Converts values with spaces

Automatically processes delimited values by removing the whitespace

Processes up to 1 million characters

A design that batch-converts long bit sequences and dumps

How to Use

Select the conversion direction with a button

Switch the conversion mode with the "Binary → Hex" and "Hex → Binary" buttons

Enter the value to convert

Enter binary or hexadecimal in the input field. Loading from a sample is also possible

Set whether to output in uppercase

For Binary → Hex, switch the A–F notation with the "Output in uppercase" toggle

Show the result with the convert button

Press convert to show the result in the output field, ready to use with copy or download

Use Cases

Debugging in programming

Convert bit flags and register values to hexadecimal to use in checking code behavior

Learning and checking radix conversion

Confirm through real examples how 4 bits correspond to one hexadecimal digit, and use it to check hand calculations

Support for analyzing memory dumps

Consolidate data in binary notation into easier-to-read hexadecimal to streamline understanding the contents

Checking network settings

Cross-check the bit sequences of subnet masks and MAC addresses against hexadecimal

Basic Knowledge

How to Convert from Binary to Hexadecimal

Since one hexadecimal digit corresponds exactly to four binary digits, you can convert by simply dividing the binary number into groups of four digits from the right and replacing each group.

Conversion Example：The binary number 10100110, when divided into groups of four digits, becomes 1010 and 0110, which correspond to hexadecimal A and 6 respectively, resulting in A6.
Range of Correspondence：Binary 0000 through 1111 correspond to hexadecimal 0 through F, and values equivalent to decimal 10 through 15 are represented by the letters A through F.

Where Is Hexadecimal Used?

Hexadecimal is widely used in color codes (such as #FF0000), memory addresses, and character code notation because it allows long binary numbers to be expressed more concisely and readably.