How it works
How to use the String to Hex Converter
Paste or open your input
Type, paste or drop a file into the left editor — or press Sample to try it.
Adjust the options
Use the options in the toolbar; the result updates as you type.
Copy or download the result
Copy or download the output — or press Swap to convert in the other direction.
About the String to Hex Converter
Convert text to its UTF-8 bytes in hexadecimal, with a choice of separator, uppercase and 0x prefixes.
Built for developers
Why developers use it
Private by design
Runs 100% in your browser. Nothing you paste is uploaded, logged or stored on a server.
Instant results
Output updates as you type, with precise error locations when something is wrong.
Works offline
Once loaded, the tool keeps working without a connection. Install it as an app if you like.
Free, no sign-up
No accounts, no limits, no watermarks.
FAQ
Frequently asked questions
Is my data uploaded anywhere?
No. Everything runs locally in your browser — nothing you type, paste or open is sent to a server, logged or stored. The tool keeps working offline once the page has loaded.
Keep going
Related tools
- Hex to String ConverterConvert hexadecimal bytes to text
- String to Binary ConverterConvert text to binary (8-bit bytes)
- Binary to String ConverterConvert binary bytes to text
- UTF-8 ConverterShow the UTF-8 bytes of any text
- Hex to UTF-8Decode hex bytes as UTF-8 text
- Text to Octal ConverterConvert text to octal bytes
- HEX to RGB ConverterConvert HEX colors to RGB
- HEX to HSL ConverterConvert HEX colors to HSL