Roman Numerals

Math

Convert between Arabic numbers and Roman numerals with validation.

Import

import { roman } from 'toolmetry';

Function	Parameters	Returns	Description
`romanToRoman`	`num: number`	`string`	Convert number to Roman numeral (1-3999)
`romanFromRoman`	`str: string`	`number`	Convert Roman numeral to number
`romanIsValid`	`str: string`	`boolean`	Check if valid Roman numeral

To Roman

import { romanToRoman } from 'toolmetry';

romanToRoman(42);   // "XLII"
romanToRoman(1999); // "MCMXCIX"

From Roman

import { romanFromRoman } from 'toolmetry';

romanFromRoman('XLII');    // 42
romanFromRoman('MCMXCIX'); // 1999

Validation

import { romanIsValid } from 'toolmetry';

romanIsValid('XLII'); // true
romanIsValid('ABC');  // false

Input