Roman Numerals Converter
Convert Numbers to Roman and Roman to Numbers
Easily convert numbers to Roman numerals and Roman numerals to numbers with our free Roman Numerals Converter. Just enter any value and get instant results.
👉 Scroll down to use the Roman Numerals Converter Tool now!
Free Roman Numeral Conversion Tool
Unlock the Ancient Code: From Numbers to Roman Numerals
Roman numerals are one of the oldest and most enduring numbering systems in history. We still see them today on clock faces, in book chapters, movie titles (like Star Wars IV), and even major sporting events like the Super Bowl. Our Roman Numerals Converter is a powerful tool designed to instantly translate modern numbers into their Roman equivalents and back again.
This tool is an invaluable resource for students working on history or math assignments, teachers creating educational materials, researchers deciphering historical texts, and designers looking for a classical touch for their projects.
How Roman Numerals Work: The Basic Rules
The Roman system is built on seven primary symbols, each with a specific value. All other numbers are formed by combining these symbols according to a set of rules.
| Symbol | Value |
|---|---|
| I | 1 |
| V | 5 |
| X | 10 |
| L | 50 |
| C | 100 |
| D | 500 |
| M | 1000 |
Numbers are typically formed by adding the values of the symbols together (e.g., VI = 5 + 1 = 6). However, there is also a key subtractive principle: when a smaller value symbol appears before a larger one, it is subtracted. Examples include IV (5 – 1 = 4), IX (10 – 1 = 9), XL (50 – 10 = 40), and CM (1000 – 100 = 900).
Roman Numerals Conversion Chart (1–100)
Here is a quick reference chart for numbers 1 to 100. For a more extensive list, use the download button in our tool to get a full Roman numerals 1 to 1000 PDF.
| Number | Roman | Number | Roman | Number | Roman | Number | Roman |
|---|---|---|---|---|---|---|---|
| 1 | I | 10 | X | 40 | XL | 90 | XC |
| 2 | II | 11 | XI | 50 | L | 100 | C |
| 3 | III | 20 | XX | 60 | LX | ||
| 4 | IV | 25 | XXV | 70 | LXX | ||
| 5 | V | 30 | XXX | 80 | LXXX |
👉 Use our tool’s Download Chart PDF button for a comprehensive 1-1000 reference sheet.
Step-by-Step User Guide
Our tool is designed for simplicity and accuracy. Here’s how to use it:
- Choose Conversion Type: By default, the tool is set to convert Number → Roman. Use the swap button (↔) to switch to Roman → Number mode.
- Enter Your Value: Type any number from 1 to 3,999 in the left box, or a valid Roman numeral in the right box.
- Get Instant Results: Click the “Convert” button. The result will instantly appear in the colored box below, along with a step-by-step “Learning Mode” explanation showing how the conversion was calculated.
- Copy, or Download: Use the dedicated buttons to copy your result to the clipboard or download a handy Roman numerals chart as a PDF for offline use.
Frequently Asked Questions (FAQs)
Q1. How to write 2025 in Roman numerals?
A: 2025 is written as MMXXV. The calculation is 1000 (M) + 1000 (M) + 10 (X) + 10 (X) + 5 (V). Our converter can solve this for you instantly.
Q2. What is 100 in Roman numerals?
A: 100 is written as C. This is one of the seven base symbols in the Roman numeral system.
Q3. Can Roman numerals go beyond 3,999?
A: Yes, though it’s less common. The standard system doesn’t have a symbol for 5,000. Historically, a line (overline) was placed above a numeral to multiply its value by 1,000. For example, a V with an overline (V̅) would mean 5,000. Our tool focuses on the standard range of 1–3,999.
Q4. What are Roman numerals used for today?
A: They are mainly used for stylistic and traditional purposes. You can find them on clock faces, as page numbers in book prefaces, in outlines, for numbering kings or popes (e.g., Queen Elizabeth II), and for annual events like the Olympic Games or the Super Bowl.
Useful Links & Resources
For more help with your studies, check out our other popular calculators:
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- Solving a math problem? Our Percentage Calculator can help.
- If you’re practicing numbers, also try our Hindi Numbers 1 to 100 in Words Tool for learning Indian number systems.
Official External Resources
For further academic reading on Roman numerals, we recommend these authoritative sources: