ASCII and Unicode code points

Explanation

Each character has a Unicode scalar value. ASCII is the 0–127 subset. Conversion is a table lookup in both directions; multi-byte UTF-8 encoding is a separate serialization of the same code points.

Variables

• characterthe glyph/text unit
• code pointinteger identity in Unicode (or ASCII subset)

When to use

Debugging encodings, escape sequences, and character-set conversions.

Use this formula

Related formulas

• Number base conversionRead digits in the source base, then rewrite the same integer in the target base
• Roman numeralsMap Roman symbols (I, V, X, L, C, D, M) with subtractive pairs (IV, IX, XL, …)