Text to Hex Converter Online
Convert plain text strings into UTF-8 hexadecimal byte representations. Generate continuous or space-separated hex pairs with custom uppercase/lowercase output.
Step-by-Step Usage Guide
Convert text into hexadecimal encoding across three quick steps:
Type or paste your text, symbols, or multilingual strings into the box.
Choose continuous vs. space-separated hex formatting and uppercase/lowercase letters.
Click “Convert Text to Hex” to inspect byte statistics and copy your hex output.
How Text Maps to Hexadecimal
Hexadecimal is a base-16 numbering system using digits 0–9 and letters A–F.
Each standard byte (8 bits) translates into exactly two hexadecimal digits, providing a compact, human-readable view of raw binary data.
UTF-8 vs. Legacy ASCII Hex
- Standard ASCII (0–127): Uses exactly 1 byte per character (e.g. “A” is always
41). - Multibyte Unicode: Accented letters, currency symbols (like € =
E2 82 AC), and emojis (like 😀 =F0 9F 98 80) require 2 to 4 UTF-8 bytes. - Spaces & Punctuation: Spaces encode into byte
20, retaining exact document structure.
Text to Hexadecimal Reference Examples
| Input String | UTF-8 Hex (Continuous) | UTF-8 Hex (Space Separated) | Total Bytes |
|---|---|---|---|
| Hello | 48656C6C6F |
48 65 6C 6C 6F |
5 Bytes |
| Hello World | 48656C6C6F20576F726C64 |
48 65 6C 6C 6F 20 57 6F 72 6C 64 |
11 Bytes |
| 123 | 313233 |
31 32 33 |
3 Bytes |
| € (Euro Symbol) | E282AC |
E2 82 AC |
3 Bytes |
| 😀 (Grinning Face) | F09F9880 |
F0 9F 98 80 |
4 Bytes |
Frequently Asked Questions
What is a text to hex converter?
A text to hex converter translates readable text characters into hexadecimal notation by encoding the string into binary bytes and rendering each byte as a pair of base-16 digits.
Why does a single character sometimes produce more than two hex digits?
Under the UTF-8 standard, basic ASCII characters occupy 1 byte (2 hex digits), whereas special symbols, non-Latin scripts, and emojis require 2 to 4 bytes (producing 4 to 8 hex digits per character).
Is my text data stored or sent to a server?
No. In accordance with our client-side privacy standard, all conversions run locally inside your browser using JavaScript’s native TextEncoder API. No data is ever transmitted or recorded.