Binary to Hex Converter — Online Free Tool

Convert binary strings directly to hexadecimal. Groups bits into 4-bit nibbles and maps each to the corresponding hex digit. Supports both big and little endian ordering.

Key Features

Maps 4-bit binary nibbles directly to single hexadecimal digits
Auto-pads leading zeros so odd-length bit sequences convert accurately
Choice of uppercase (A-F) or lowercase (a-f) output characters
Optional "0x" prefix and byte spacing for memory inspection

How to Use

Enter or paste your binary string (e.g. 11110000 10101010).
Choose formatting preferences (uppercase/lowercase, 0x prefix).
Click "Convert to Hex" to execute the conversion.
Inspect the converted hexadecimal string.
Copy the hex code to your clipboard.

Example

Sample input

11111111

Sample output

FF

Edge Cases

Bit length not a multiple of 4 (padding)
Empty binary string
Separators or spaces in input

Frequently Asked Questions

Why is binary so straightforward to convert to hex?

Because 16 is 2^4, exactly 4 binary bits (a nibble) correspond to 1 hexadecimal digit. This 4-to-1 ratio makes direct alignment effortless.

What happens if my binary input length is not a multiple of 4?

The converter automatically adds leading zeros to pad the highest nibble to 4 bits so the conversion remains mathematically sound.

Can I input binary numbers with spaces between bytes?

Yes. Spaces, line breaks, and tabs are automatically ignored during parsing.

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Privacy notice: when you run this tool, your input is sent over HTTPS to our server, processed in memory and returned. It is not stored or logged. Avoid pasting live secrets such as private keys or passwords.