What is hexadecimal and how does it work?

Hexadecimal (hex) is a base-16 number system using digits 0-9 and letters A-F (representing values 10-15). Each hex digit represents exactly 4 bits, so two hex digits represent one byte (8 bits). Hex is widely used in programming for memory addresses, color codes, and binary data representation.

How do I convert text to hexadecimal online?

Paste your text into the input field, select "Text to Hex" mode, and the hexadecimal representation appears instantly. Each character is converted to its byte value(s) in hex format. You can choose different separators (space, colon, none) for the output.

How do I convert hex to text?

Paste your hexadecimal string into the input field, select "Hex to Text" mode, and view the decoded text instantly. The converter accepts hex with spaces, colons, dashes, commas, 0x prefixes, or no separators between bytes.

Why is hexadecimal used in programming?

Hex is compact and maps directly to binary (4 bits per digit), making it easy to read and write binary data. It's used for: memory addresses, color codes (#FF5733), MAC addresses (00:1A:2B:3C:4D:5E), byte sequences, debugging, and representing binary data in source code.

What hex separators and formats are supported?

This tool accepts hex in multiple formats: with spaces (48 65 6C 6C 6F), colons (48:65:6C:6C:6F), dashes (48-65-6C-6C-6F), commas (48,65,6C,6C,6F), 0x prefixes (0x48 0x65), or no separator (48656C6C6F). It automatically detects the format.

How do I convert a CSS color code from hex?

CSS color codes like #FF5733 are already in hexadecimal. FF = 255 (red), 57 = 87 (green), 33 = 51 (blue). Remove the # and convert each pair of hex digits to decimal to get RGB values. Use our Hex to RGB tool for automatic conversion.

Why am I getting "Invalid hexadecimal characters" error?

Hexadecimal only uses characters 0-9 and A-F (case-insensitive). Check for typos like G, H, or other invalid characters. Also ensure there are no extra spaces or special characters that aren't recognized separators.

What does "hex string must have even length" mean?

Each byte is represented by exactly 2 hex digits. An odd number of hex digits means incomplete data - the last byte is missing a digit. Add a leading zero if needed (e.g., "F" should be "0F" for the value 15).

How does Unicode and UTF-8 work with hex conversion?

Unicode characters are encoded as UTF-8 bytes, then each byte is converted to hex. ASCII characters use 1 byte (e.g., "A" = 41). Extended characters use 2-4 bytes (e.g., "é" = C3 A9, "😀" = F0 9F 98 80).

What is the 0x prefix in hexadecimal?

The 0x prefix indicates a hexadecimal number in many programming languages (C, JavaScript, Python). For example, 0xFF equals 255 in decimal. This tool handles 0x prefixes automatically, stripping them during conversion.

How do I convert between hex and binary?

Each hex digit equals exactly 4 binary digits: 0=0000, 1=0001, ..., 9=1001, A=1010, B=1011, C=1100, D=1101, E=1110, F=1111. Convert each hex digit to its 4-bit binary equivalent. Use our Binary to Text tool for direct conversion.

What is the difference between hex and decimal?

Decimal (base-10) uses digits 0-9, while hex (base-16) uses 0-9 and A-F. Hex is more compact for binary data: one byte (0-255) is always 2 hex digits but 1-3 decimal digits. Hex also aligns with binary (4 bits per digit).

How do I read MAC addresses in hex?

MAC addresses are 6 bytes written as 12 hex digits, typically separated by colons or dashes: 00:1A:2B:3C:4D:5E or 00-1A-2B-3C-4D-5E. Each pair represents one byte of the hardware address.

Can I use hex for encoding binary files?

Yes, hex can represent any binary data. However, hex doubles the size (1 byte = 2 hex characters), so Base64 (33% overhead) is usually preferred for file encoding. Hex is better for debugging and displaying small amounts of binary data.

Is my data secure when using this hex converter?

Yes! All conversion happens 100% in your browser using JavaScript. Your text and hex data never leave your device or get sent to any server. This makes it safe for converting sensitive data like encryption keys or passwords.

What is hexadecimal and how does it work?

Hexadecimal (hex) is a base-16 number system using digits 0-9 and letters A-F (representing values 10-15). Each hex digit represents exactly 4 bits, so two hex digits represent one byte (8 bits). Hex is widely used in programming for memory addresses, color codes, and binary data representation.

How do I convert text to hexadecimal online?

Paste your text into the input field, select "Text to Hex" mode, and the hexadecimal representation appears instantly. Each character is converted to its byte value(s) in hex format. You can choose different separators (space, colon, none) for the output.

How do I convert hex to text?

Paste your hexadecimal string into the input field, select "Hex to Text" mode, and view the decoded text instantly. The converter accepts hex with spaces, colons, dashes, commas, 0x prefixes, or no separators between bytes.

Why is hexadecimal used in programming?

Hex is compact and maps directly to binary (4 bits per digit), making it easy to read and write binary data. It's used for: memory addresses, color codes (#FF5733), MAC addresses (00:1A:2B:3C:4D:5E), byte sequences, debugging, and representing binary data in source code.

What hex separators and formats are supported?

This tool accepts hex in multiple formats: with spaces (48 65 6C 6C 6F), colons (48:65:6C:6C:6F), dashes (48-65-6C-6C-6F), commas (48,65,6C,6C,6F), 0x prefixes (0x48 0x65), or no separator (48656C6C6F). It automatically detects the format.

How do I convert a CSS color code from hex?

CSS color codes like #FF5733 are already in hexadecimal. FF = 255 (red), 57 = 87 (green), 33 = 51 (blue). Remove the # and convert each pair of hex digits to decimal to get RGB values. Use our Hex to RGB tool for automatic conversion.

Why am I getting "Invalid hexadecimal characters" error?

Hexadecimal only uses characters 0-9 and A-F (case-insensitive). Check for typos like G, H, or other invalid characters. Also ensure there are no extra spaces or special characters that aren't recognized separators.

What does "hex string must have even length" mean?

Each byte is represented by exactly 2 hex digits. An odd number of hex digits means incomplete data - the last byte is missing a digit. Add a leading zero if needed (e.g., "F" should be "0F" for the value 15).

How does Unicode and UTF-8 work with hex conversion?

Unicode characters are encoded as UTF-8 bytes, then each byte is converted to hex. ASCII characters use 1 byte (e.g., "A" = 41). Extended characters use 2-4 bytes (e.g., "é" = C3 A9, "😀" = F0 9F 98 80).

What is the 0x prefix in hexadecimal?

The 0x prefix indicates a hexadecimal number in many programming languages (C, JavaScript, Python). For example, 0xFF equals 255 in decimal. This tool handles 0x prefixes automatically, stripping them during conversion.

How do I convert between hex and binary?

Each hex digit equals exactly 4 binary digits: 0=0000, 1=0001, ..., 9=1001, A=1010, B=1011, C=1100, D=1101, E=1110, F=1111. Convert each hex digit to its 4-bit binary equivalent. Use our Binary to Text tool for direct conversion.

What is the difference between hex and decimal?

Decimal (base-10) uses digits 0-9, while hex (base-16) uses 0-9 and A-F. Hex is more compact for binary data: one byte (0-255) is always 2 hex digits but 1-3 decimal digits. Hex also aligns with binary (4 bits per digit).

How do I read MAC addresses in hex?

MAC addresses are 6 bytes written as 12 hex digits, typically separated by colons or dashes: 00:1A:2B:3C:4D:5E or 00-1A-2B-3C-4D-5E. Each pair represents one byte of the hardware address.

Can I use hex for encoding binary files?

Yes, hex can represent any binary data. However, hex doubles the size (1 byte = 2 hex characters), so Base64 (33% overhead) is usually preferred for file encoding. Hex is better for debugging and displaying small amounts of binary data.

Is my data secure when using this hex converter?

Yes! All conversion happens 100% in your browser using JavaScript. Your text and hex data never leave your device or get sent to any server. This makes it safe for converting sensitive data like encryption keys or passwords.

Hex to Text Converter

simple

Convert between hexadecimal and text bidirectionally. Decode hex strings to readable text or encode text to hex format. Supports multiple separators, 0x prefix, and UTF-8 Unicode characters.

Encoders & Decodershexhexadecimaltextconvert

100% Private - Runs Locally

How to Use

1Enter text or hex string
2Select conversion direction
3Choose separator format
4Copy the result

Examples

Text to Hex

Input

Hello

Output

48 65 6c 6c 6f

Hex to Text

Input

48656c6c6f2c20576f726c6421

Output

Hello, World!

Unicode to Hex

Input

🌍

Output

f0 9f 8c 8d

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