Text to Hex Converter
Turn any text into hexadecimal byte values — free, private and instant in your browser.
How to Use the Text to Hex Converter
- Type or paste the text you want to encode into the input box.
- Pick a separator: "Space" for readable byte pairs, "None" for a continuous hex string, "Comma" for array-style lists, or "0x prefix each byte" for source code.
- Tick "Uppercase hex" if your target format expects A–F instead of a–f — memory dumps and MAC addresses often do.
- Click "Convert" to encode the text into hexadecimal byte values.
- Use "Copy result" to grab the hex string, or "Clear" to empty both boxes and start again.
What Is a Text to Hex Converter?
A text to hex converter takes the characters you type, encodes them as UTF-8 bytes, and prints each byte as a two-digit hexadecimal number. The letter A becomes 41, a space becomes 20, and an emoji becomes a group of four bytes such as f0 9f 98 80. Because hexadecimal packs eight bits into two compact characters, it is the format engineers reach for whenever raw bytes need to be read by a human.
Hex shows up everywhere in day-to-day development: colour codes in CSS, byte offsets in a hex editor, packet captures in Wireshark, escape sequences in C or Python source, checksums, and binary blobs pasted into a bug report. Converting text to hex is also a quick way to spot invisible characters — a stray non-breaking space or a UTF-8 BOM is obvious in hex long before it is obvious on screen. This tool encodes everything locally, so nothing you paste leaves your device.
When you need to go the other way, the hex to text converter decodes hex back into readable characters. For other encodings, try the text to binary converter or the Base64 encoder and decoder.
Frequently Asked Questions (FAQ)
How do I convert text to hex online?
Paste your text into the box, choose a separator, and click "Convert". The tool encodes the string as UTF-8 and prints one two-digit hex value per byte, ready to copy.
What is the difference between ASCII to hex and UTF-8 to hex?
For plain English text the two are identical, because ASCII characters occupy a single byte with the same value in UTF-8. The difference appears with accents, emoji and non-Latin scripts, which UTF-8 encodes as two, three or four bytes — this converter always uses UTF-8 so those characters survive a round trip.
Why does my emoji turn into four hex pairs?
Emoji live outside the single-byte range, so UTF-8 stores them as four bytes and the converter prints four hex pairs. Decoding all four pairs together restores the original emoji; decoding them separately does not.
Should I use uppercase or lowercase hex?
Both represent the same values, so it is purely a convention. Lowercase is common in web development and Unix tooling, while uppercase is typical in memory dumps, MAC addresses and many hardware datasheets.
What does the 0x prefix mean?
0x is the standard marker that a number is written in hexadecimal in C, Java, JavaScript, Python and most other languages. Choosing the 0x option formats each byte as a literal you can paste straight into source code.
Is converting text to hex the same as encrypting it?
No. Hex is a representation, not a cipher — anyone can decode it in seconds. Use hex for readability and transport, and real encryption or hashing when data actually needs to be protected.
Is the text I paste kept private?
Yes. The conversion runs entirely in your browser with the built-in TextEncoder API. ToolGenie never uploads, logs or stores what you type on this page.
Tips for Converting Text to Hex
- Tip 1: Space-separated output is the easiest to proofread; switch to the no-separator option only when a system expects one long hex string.
- Tip 2: Convert suspicious text to hex to unmask invisible characters — 0d 0a means a Windows line ending, c2 a0 means a non-breaking space, and ef bb bf is a UTF-8 BOM.
- Tip 3: Match the casing your target expects before you paste. Some parsers, checksum comparisons and test fixtures compare hex strings literally, so a–f versus A–F can fail a match.
- Tip 4: Verify your output by pasting it into the hex to text converter — if the original string comes back, the encoding is correct. For transporting binary payloads, the Base64 encoder and decoder produces a far shorter string than hex.