Binary to Hex Converter Free Online Tool
Convert binary to hexadecimal - nibble or byte chunks, separator options, uppercase toggle, BigInt precision. Free, client-side, instant, offline, secure.
Convert binary digits (0s and 1s) to hexadecimal. Choose nibble mode (4-bit → 1 hex digit) or byte mode (8-bit → 2 hex digits). Handles misaligned input via left-padding, batches many lines at once.
How to Use Binary to Hex Converter Free Online Tool
- Paste binary digits into the input - only 0s and 1s, whitespace is OK and stripped. Put one logical value per line for batch conversion.
- Pick chunk size.
Byte (8-bit)is the default - each group of 8 bits becomes a 2-digit hex byte. UseNibble (4-bit)when you want one hex digit per 4 bits (e.g. for BCD-like representations or when preserving exact bit count matters). - Pick a separator.
Spaceis readable (48 69),Nonepacks tight (4869),Colonis OpenSSL / MAC-address style,0x-prefixdrops into C/Rust/Go source. - Uppercase toggle: some legacy protocols want
A-Finstead ofa-f. Modern APIs typically prefer lowercase. - Left-pad behaviour. With pad on (default), input that isn’t aligned to the chunk size gets zeros prepended - stats show how many. With pad off, misaligned input fails with a clear error.
- Check the stats: total bits · chunk count · hex output length · padding added · valid vs invalid counts. If you see
+5 pad bitsyou know the tool prepended 5 zeros to reach the next chunk boundary. - Copy or download. Clipboard or
binary-hex-<timestamp>.txtdownload.Ctrl+Enter/Cmd+Enterruns convert + copy.
Frequently Asked Questions
How does binary to hex conversion work?
Every 4 binary bits map to 1 hex digit. The tool groups your input into nibbles (4 bits) or bytes (8 bits = 2 hex digits) and looks up each group’s hex value.
What are nibble and byte modes?
Nibble mode outputs one hex digit per 4-bit group, keeping the exact bit width of the input. Byte mode groups in 8-bit chunks, which is the standard format for most binary data and file dumps.
What separators can I choose?
No separator (ffd8), single space (ff d8), colon (ff:d8), or dash (ff-d8). Pick the one that matches your target context like memory dumps, MAC addresses, or hash strings.
Why does the tool offer uppercase and lowercase hex?
Uppercase (FF d8) is common in older documentation and Windows tools. Lowercase (ff d8) is more common in modern web, Unix, and cryptographic contexts. Both produce the same value.
Is my data secure?
Yes. All conversions happen in your browser. Your binary input and hex output never touch a server.
Do you log anything?
No. The tool is fully client-side with no telemetry on your actual data.
Is this tool free?
Yes, no sign-up and no usage limits.
What if my binary has odd length for byte mode?
The tool pads with leading zeros to complete the last byte. You can switch to nibble mode if you want to preserve the exact bit count.
Can I convert very long binary inputs?
Yes. The tool handles binary strings of thousands of bits using JavaScript BigInt for precision and efficient string processing.
What if my input has spaces or other separators?
The tool strips whitespace, commas, and newlines automatically so you can paste formatted input without cleanup.