ASCII / Unicode Converter

ASCII / Unicode Converter is a free tool that runs entirely in your browser, with no data ever sent to a server. Turn text into its Unicode character codes, decimal or hexadecimal.

What character codes are for

Every character, including emoji and accented letters, corresponds to a unique number in the Unicode standard. That number is useful, for example, to write a character a keyboard can't type directly, in code or in a configuration file.

What this tool does not do

This tool only applies the calculation described, with no check on the context of use. No limit is set by the tool itself; the only constraint is your device's memory.

Frequently asked questions

Why does an emoji give two codes?

Some characters, including many recent emoji, are represented in JavaScript by a pair of two code units: that's normal, the two together form a single displayed character.

Is my data sent to a server?

No: the text you type or paste is processed entirely in your browser, on your device. It is never transmitted to a server.

Do I need to create an account or install anything?

No: the tool works directly in this page, with no sign-up and nothing to install.