What does this tool do?
| Direct answer | ASCII to Hex encodes each character's byte value as two hex digits. |
| Key fact | UTF-8 input may produce multiple bytes per character (é → C3 A9). |
| Processing | Runs locally in your browser; no data is sent to a server. |
How to use
- Type text like Hello.
- Click Convert.
- See the hex bytes.
Example
Input
Hello
Output
48 65 6C 6C 6F
Who is this for?
This tool was built for people who need a fast answer in the browser — no install, no account, no data leaving the device.
Programmers working with low-level data, computer science students, and electronics hobbyists reading registers — anyone tired of converting number bases by hand.
Frequently asked questions
Why did é produce two bytes?
UTF-8 encodes it as C3 A9 — one character, two bytes.
Is the output uppercase?
Yes, uppercase hex by convention.
Can I convert back?
Use the Hex to ASCII tool — the pair is inverse.