Converting Decimal Numbers to Roman Numerals with JavaScript: A step-by-step guide

Javascript Jeep🚙💨
3 min readMay 8, 2023

This article presents a step-by-step guide on how to convert decimal numbers to Roman numerals using JavaScript with code examples.

Photo by Kai Dahms on Unsplash

Introduction:

Roman numerals are a numeral system that originated in ancient Rome and it’s based on the usage of letters from the Latin alphabet, so it doesn’t use any digit like we have in the decimal number system. Thus, Roman numeral representation is widely used in many applications, including clock faces, numbering of pages in prefaces and introductions, and in many formal documents. So, in this article, we will discuss how to write a function using JavaScript that can convert any given decimal number into its corresponding Roman numeral representation.

Algorithm:

The first step in writing such a function is to understand the rules for constructing Roman numerals. Roman Numerals are formed by combining symbols together to get different values. Here are some basic rules that you need to follow while writing a function to convert a decimal number into its Roman numeral representation.

  1. Roman numerals are represented with seven different letters: I, V, X, L, C, D, and M.
  2. Each letter represents a different value.

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