Roman numerals

Explanation

Values add by default (VI = 6). Subtractive pairs place a smaller symbol before a larger one (IV = 4). Standard ranges cover typical calendar and outline uses; very large numbers need additional notation.

Variables

• symbolsI=1, V=5, X=10, L=50, C=100, D=500, M=1000
• subtractive pairsIV, IX, XL, XC, CD, CM

When to use

Dates, outlines, clock faces, and historical references.

Use this formula

Related formulas

• Number base conversionRead digits in the source base, then rewrite the same integer in the target base
• ASCII and Unicode code pointsMap characters to Unicode/ASCII code points (and the reverse)