Text to ASCII Converter

Every character a computer stores — every letter, digit, and punctuation mark — is really a number. The most familiar mapping of characters to numbers is ASCII: the American Standard Code for Information Interchange, which assigns the values 0 to 127 to the characters used in English text. Under ASCII, a capital A is 65, a lowercase a is 97, and a space is 32.

This tool reads the text you type and reports the numeric code of each character. You choose whether to see codes in everyday decimal (A is 65) or hexadecimal (A is 0x41). It preserves your line structure, so a paragraph converts line-for-line, and it works entirely in your browser — the text never leaves your device.

One honest caveat: classic ASCII covers only the values 0 to 127. Characters outside that range — letters with accents, emoji, and most non-Latin scripts — have Unicode code points above 127. The tool still shows their numeric value, but flags those characters so you can tell classic ASCII apart from extended Unicode text.

Each character maps to a single numeric code:

• ASCII characters (0–127) — letters, digits, punctuation, control codes — use their standard ASCII value. • Characters beyond 127 are Unicode code points; the tool marks them with an asterisk so they are not mistaken for classic ASCII.

You can switch between two notations: • Decimal — using the base-10 value, e.g. A is 65. • Hexadecimal — using the base-16 value, e.g. A is 0x41.

A quick reference for the common digits: A=65, Z=90, a=97, z=122, 0=48, 9=57, space=32. Uppercase letters occupy 65–90 and lowercase 97–122, which is why case conversion is only a matter of adding or subtracting 32.