Professional converter between Roman numerals and decimals. Precise tool for students, historians, and professionals.
The Roman numeral system uses combinations of letters from the Latin alphabet to represent values. Learn the rules and uses of this historical system.
| Decimal | Roman | Decimal | Roman |
|---|---|---|---|
| 1 | I | 50 | L |
| 4 | IV | 90 | XC |
| 5 | V | 100 | C |
| 9 | IX | 400 | CD |
| 10 | X | 500 | D |
| 40 | XL | 900 | CM |
| 49 | XLIX | 1000 | M |
Manage your cookie preferences. You can enable or disable different types of cookies below.
These cookies are essential for the website to function and cannot be switched off.
These cookies allow the website to remember choices you make (like language or region) and provide enhanced features.
These cookies help us understand how visitors interact with our website by collecting anonymous information.
These cookies are used to track visitors across websites to display relevant advertisements.
Under the GDPR, you have the right to access, rectify, and erase your personal data. You can also object to processing and request data portability.