romannumerals

Lightweight roman numeral translator. Supports decimal numbers up to 5000000 or so.

Usage

var roman = require('romannumerals);

roman.toRoman(0);
''
roman.toRoman(1)
'I'
roman.toRoman(1234);
'MCCXXXIV'
roman.toRoman(1954);
'MCMLIV'
roman.toRoman(1990);
'MCMXC'
roman.toRoman(2014);
'MMXIV'
roman.toRoman('1999');
'MCMXCIX'
roman.toRoman('9999');
I̅X̅CMXCIX'
roman.toRoman('1423423');
M̅C̅D̅X̅X̅MMMCDXXIII'

roman.toDecimal('');
0
roman.toDecimal('I')
1
roman.toDecimal('MCCXXXIV');
1234
roman.toDecimal('MCMLIV');
1954
roman.toDecimal('MCMXC');
1990
roman.toDecimal('MMXIV');
2014
roman.toDecimal('MCMXCIX');
1999
roman.toDecimal('I̅X̅CMXCIX');
9999

toDecimal can check for valid roman numerals

roman.toDecimal('MIM', true);
Error: MIM is not valid Roman Numerals. Should be MCMXCIX
roman.toRoman(roman.toDecimal('MIM'));
'MCMXCIX'