Converting numbers to and from roman numerals as easy as II+II=IV.
Available as a package.

There are very few features:

• Convert integers to roman numerals
• Convert roman numerals to integers
• Use roman numeral ASCII representation (I, II, III, IV)
• Use roman numeral Unicode representation (Ⅰ, Ⅱ, Ⅲ, Ⅳ)
• Use roman numeral vinculum extensions (V̅I̅=6000, I̿I̿=200000, etc.)
• Use roman numeral apostrophus (C|Ɔ=1000, |ƆƆ=5000, CC|ƆƆ=10000, |ƆƆƆ=50000, CCC|ƆƆƆ=100000)
• Use roman numeral apostrophus special characters (ↀ=1000, ↁ=5000, ↂ=10000, ↇ=50000, ↈ=100000)
• Use of positive-only combinations (use ⅠⅠⅠⅠ instead of Ⅳ)

To display: uint to string (representing a Roman numeral)

Console.WriteLine(RomanNumerals.Convert.ToRomanNumerals(123)); // CXXIII
Console.WriteLine(RomanNumerals.Convert.ToRomanNumerals(227, NumeralFlags.Unicode)); // ⅭⅭⅩⅩⅦ

Parsing: string to uint

Console.WriteLine(RomanNumerals.Convert.FromRomanNumerals("IV")); // 4

All methods also works as extension methods:

using RomanNumerals;
var a1 = Convert.ToRomanNumerals(123);
var a2 = 123 .ToRomanNumerals(); // same as above 😍

Formatting is done using the NumeralBuilder class, with several options. NumeralBuilder implements ICustomFormatter with the following flags:

Parsing is done using the NumeralParser class (with less options, because it parses all forms at once).

Read more about roman numerals at

• https://en.wikipedia.org/wiki/Roman_numerals for general information
• https://en.wikipedia.org/wiki/Numerals_in_Unicode#Roman_numerals for Unicode information
• https://www.unicode.org/charts/PDF/U2150.pdf for Unicode chart