UTF-8 Encoder

Understanding UTF-8 Byte Encoding

UTF-8 is the dominant text encoding on the web. ASCII characters take a single byte, while accented letters, symbols, and emoji span two to four bytes. This tool encodes your text to its raw UTF-8 bytes and shows them as hexadecimal or decimal — useful for debugging encoding issues, building byte arrays, or inspecting how multi-byte characters are stored. Pairs with the UTF-8 Decoder. Runs entirely in your browser.