A powerful and free tool to convert between Roman numerals and Arabic numbers. Easily convert numbers to Roman numerals and vice versa with simple math rules.
Our Roman Numerals Converter is a powerful and intuitive tool designed for students, teachers, historians, and anyone working with Roman numerals. This utility simplifies the process of converting between Roman numerals and Arabic numbers, making it easy to understand and work with this ancient numbering system.
Roman numerals originated in ancient Rome and were used throughout Europe until the late Middle Ages. They use combinations of letters from the Latin alphabet to represent values. The basic symbols are I (1), V (5), X (10), L (50), C (100), D (500), and M (1000). Our converter follows the standard rules for Roman numeral formation, including subtractive notation for numbers like 4 (IV) and 9 (IX).
With our converter, you can easily transform Arabic numbers (1-3999) into their Roman numeral equivalents, and vice versa. This is particularly useful for educational purposes, reading historical documents, understanding clock faces, and working with book chapters or movie titles that use Roman numerals.
Our free Roman numerals converter tool is designed with user experience at its core, offering a clean and intuitive interface that works seamlessly across all devices. The tool processes your input locally in your browser, ensuring fast performance and complete privacy - no data is sent to external servers. Best of all, this free tool requires no registration, has no usage limits, and respects your privacy by not storing any of your input data.
| Arabic Number | Roman Numeral | Arabic Number | Roman Numeral |
|---|---|---|---|
| 1 | I | 20 | XX |
| 2 | II | 30 | XXX |
| 3 | III | 40 | XL |
| 4 | IV | 50 | L |
| 5 | V | 60 | LX |
| 6 | VI | 70 | LXX |
| 7 | VII | 80 | LXXX |
| 8 | VIII | 90 | XC |
| 9 | IX | 100 | C |
| 10 | X | 200 | CC |
| 11 | XI | 300 | CCC |
| 12 | XII | 400 | CD |
| 13 | XIII | 500 | D |
| 14 | XIV | 600 | DC |
| 15 | XV | 700 | DCC |
| 16 | XVI | 800 | DCCC |
| 17 | XVII | 900 | CM |
| 18 | XVIII | 1000 | M |
| 19 | XIX | 2000 | MM |
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