Hex Converter Tool
Hexadecimal is the language of the web – from CSS colour codes to HTML character references to data encoding. Our Hex Converter Tool makes it simple to convert between decimal (base 10) and hexadecimal (base 16) values in both directions, giving you instant, accurate results without any mental arithmetic.
Why Use Our Hex Converter?
- Converts text to hexadecimal and hexadecimal back to text instantly.
- Useful for CSS colour codes, HTML entities, data encoding, and debugging.
- Works entirely in the browser – no server, no account needed.
- Handles both single values and longer strings.
- Free.
How to Use the Converter:
- Enter text to convert it to hexadecimal, or enter hex values to convert back to text.
- Your converted result appears instantly.
- Copy and use it wherever you need it.
Hex Converter Tool
Hexadecimal notation is used throughout web development – colours are commonly written as six-character hex codes (#ff5733), HTML special characters are encoded as hex entities (&), and binary data is frequently represented in hex for readability. This converter saves time whenever you need to move between these representations.
Frequently Asked Questions
Why are CSS colours written in hex?
CSS hex colour codes represent red, green, and blue channel values in hexadecimal. For example, #FF0000 means red=255, green=0, blue=0 (pure red). Hex is used because it’s more compact than RGB notation and was historically the first colour format supported in CSS.
What is the difference between hex and binary?
Binary uses only two digits (0 and 1). Hexadecimal uses 16 digits (0-9 and A-F). Each hex digit represents exactly four binary bits (a nibble), making hex a much more compact way to write binary data. For example, the binary value 11111111 is FF in hex and 255 in decimal.
Can this converter handle long strings of hex data?
Yes. The converter handles both individual values and longer strings, making it useful for tasks like decoding hex-encoded data payloads or inspecting raw file content.