Number to Roman Numerals

Number to Roman Numerals

You can use this tool to convert Roman numerals to regular numbers or regular numbers to Roman numerals. It supports Roman numerals up to 3,999,999, using the letters I, V, X, L, C, D, and M.

Have you ever wondered how ancient Romans used to write numbers? Instead of the familiar digits we use today (1, 2, 3...), they had their own system called Roman numerals. Roman numerals are still used today in various places, like on clock faces and in the titles of movies. In this article, we'll explore how to convert numbers into Roman numerals.

What are Roman Numerals?

Roman numerals are a way of representing numbers using letters from the Latin alphabet. The Roman numeral system was developed in ancient Rome and was used throughout the Roman Empire. Even though we now use the Arabic numeral system (1, 2, 3...), Roman numerals continue to be a part of our culture.

Here are the basic Roman numerals and their corresponding values:

  • I: 1
  • V: 5
  • X: 10
  • L: 50
  • C: 100
  • D: 500
  • M: 1000

To represent numbers, Romans combined these letters in various ways. Let's learn how to convert numbers into Roman numerals.

How to Convert Numbers to Roman Numerals

Converting numbers into Roman numerals may seem a bit confusing at first, but with practice, it becomes much easier. Here's a step-by-step guide to help you understand how it's done:

Step 1: Start with the Largest Roman Numeral

When converting a number to Roman numerals, always start with the largest possible Roman numeral that is less than or equal to the number you're trying to represent. For example, if you want to convert the number 37, start with the largest Roman numeral less than 37, which is X (10).

Step 2: Subtract or Add Roman Numerals

Now, you have X (10) as your starting point. You can either subtract or add Roman numerals from this point to reach the desired number. In our example (37), we want to add Roman numerals to X to get closer to 37.

Step 3: Add the Appropriate Roman Numerals

To reach 37, we can add a V (5) and two I's (1+1), which gives us XVII. XVII represents 17 in Roman numerals.

Step 4: Continue the Process

Now, let's say you want to convert the number 89 into Roman numerals. Start with the largest Roman numeral less than or equal to 89, which is L (50). To get closer to 89, you can add an X (10) and four I's (1+1+1+1). So, 50 (L) + 10 (X) + 1 (I) + 1 (I) + 1 (I) + 1 (I) equals LXXXXIIII. However, in Roman numerals, there are rules to simplify them. So, LXXXXIIII can be simplified to XCIX.

Step 5: Follow Roman Numeral Rules

Roman numerals have some rules to make them easier to read and write:

  • No more than three identical symbols in a row: For example, instead of writing IIII for 4, you should write IV.
  • Smaller symbols can be placed before larger symbols to subtract their value. For example, IV represents 4 (5 - 1), and XC represents 90 (100 - 10).

Common Roman Numerals

Here are some common Roman numerals to help you get started:

  • I: 1
  • IV: 4 (5 - 1)
  • V: 5
  • IX: 9 (10 - 1)
  • X: 10
  • XL: 40 (50 - 10)
  • L: 50
  • XC: 90 (100 - 10)
  • C: 100
  • CD: 400 (500 - 100)
  • D: 500
  • CM: 900 (1000 - 100)
  • M: 1000

Practice Makes Perfect

Converting numbers into Roman numerals might take some practice, but once you get the hang of it, it becomes easier and even fun. You can try converting various numbers into Roman numerals as an exercise.

When Are Roman Numerals Used Today?

You might be wondering why Roman numerals are still relevant today. While we primarily use Arabic numerals for everyday math and counting, Roman numerals have their place in certain situations:

  1. Clocks: Roman numerals are often used on clock faces. For example, instead of 4, you'll see IV, and 9 is represented as IX.

  2. Movie Titles: You've probably seen Roman numerals in movie titles. They give a classic and timeless feel. For example, "Rocky IV" means "Rocky 4."

  3. Book Chapters and Sections: Roman numerals are sometimes used to number chapters and sections in books, especially in older publications.

  4. Monuments and Dates: You can find Roman numerals on monuments and buildings to indicate the year they were built or established.

  5. Numbering Lists: Roman numerals are used to number items in lists, outlines, or outlines for essays.


Roman numerals are a fascinating way of representing numbers that have been around for thousands of years. Although we primarily use Arabic numerals in our daily lives, Roman numerals still play a role in our culture. Converting numbers into Roman numerals is a valuable skill, and with practice, you can become proficient at it. So, the next time you see Roman numerals on a clock or in a movie title, you'll know how to read and appreciate them!


Azahar Ahmed

CEO / Co-Founder

I am Azahar Ahmed, a youthful Engineer, Entrepreneur, Digital Marketer, and Motivational speaker native to Nagaon, Assam, India. Originating from a middle-class background, I am the sole son. My accomplishments are indebted to my father, a Teacher, and my mother, formerly a Teacher but now devoted to our well-being. My mother has been my closest ally, and unitedly, my parents have fostered and realized all my aspirations, epitomizing the perfect parents.

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