Convert Roman numerals to numbers and convert numbers back to Roman numerals. This online Roman Numerals converter helps you translate between Roman numerals and modern integers quickly and accurately for education, programming, or historical calculations.
The kovertiz Roman numeral translator is a precision tool designed to bridge the gap between ancient numbering systems and modern decimal notation. Whether you are deciphering historical dates, legal titles, or architectural inscriptions, our engine provides instant, accurate conversion.
The professional tool for historians, genealogists, and students. At kovertiz , all mathematical processing happens locally in your browser to ensure total privacy and zero-latency performance.
Common historical and modern numeral combinations.
| Current Year | MMXXVI (2026) |
| Number Nine | IX |
| Number Forty | XL |
| Number Ninety | XC |
| Four Hundred | CD |
| Nine Hundred | CM |
| Max Value | MMMCMXCIX (3999) |
Standard Roman values and character mapping supported by the kovertiz engine. Essential for classical notation and historical dates.
| Roman Symbol | Decimal Value | Notation Type | SEO Keywords |
|---|---|---|---|
| I | 1 | Basic Unit | Roman I to 1, Latin 1 |
| V | 5 | Intermediate | Roman V value, Five in Roman |
| X | 10 | Basic Unit | Roman X meaning, Decem |
| L | 50 | Intermediate | Roman L converter, Fifty |
| C | 100 | Basic Unit | Roman C value, Centum |
| D | 500 | Intermediate | Roman D notation, 500 Roman |
| M | 1000 | Basic Unit | Roman M converter, Mille |
Master the ancient Roman numbering system. Convert Arabic numbers to Roman numerals with the high-precision kovertiz algorithm.
Standard Roman numerals support up to 3,999 (MMMCMXCIX). Beyond this, kovertiz follows historical notation, though numbers above 4,000 traditionally required "vinculums" (bars) which are rare in modern web typography.
This follows the subtractive rule. Placing a smaller value (I) before a larger one (V) indicates subtraction ($$5 - 1 = 4$$). kovertiz automatically applies these rules for valid Roman notation.
No. The ancient system lacked a symbol for zero. They used the Latin word nulla for "nothing". Our online converter respects this historical constraint, focusing on positive integers only.
The system relies on seven symbols: I (1), V (5), X (10), L (50), C (100), D (500), and M (1000). kovertiz combines these symbols to build any number accurately using additive and subtractive logic.
Standard rules limit the repetition of I, X, C, and M to three consecutive times. For example, 40 is XL, not XXXX. Our conversion engine enforces these syntax standards for perfect results.
They are widely used for copyright dates, clock faces, book chapters, and Super Bowl numbering. Using kovertiz ensures you get the correct formatting for formal documentation and graphic design.