Roman Numeral Converter - Numbers to Roman Numerals & Back
Convert numbers to Roman numerals, or translate Roman numerals back to regular numbers, instantly. Free bi-directional roman numeral converter and translator.
Number (1-3999)
Roman Numeral
Roman Numeral Converter
Convert a number to Roman numerals, or convert Roman numerals back to regular (Arabic) numbers — this tool works as both a number to roman numeral converter and a roman numeral to number converter at the same time. It's fully bi-directional: type into either field and the other updates instantly. It supports whole numbers between 1 and 3999, the range the classical Roman numeral system can represent.
How to Use It
To convert a number to roman numerals, type a whole number (1-3999) into the "Number" field — the Roman numeral translation appears instantly below it. To go the other way and translate roman numerals to english (regular numbers), type letters like "MCMXCIV" into the "Roman Numeral" field and the equivalent number appears instantly above it. There's no need to switch modes — the calculator detects which field you're typing in and converts automatically in that direction.
Example
Converting a number to roman numerals: the number 1994 converts to "MCMXCIV", and 2024 converts to "MMXXIV". Converting roman numerals to numbers (the reverse direction): "MCMXCIV" translates back to 1994, and "XIV" translates to the regular number 14.
Common Use Cases
- Converting a birth year, wedding date, or anniversary into Roman numerals for an engraving, tattoo, or gift.
- Translating a Roman numeral date on a ring, monument, clock face, or movie credit back into a regular number you can actually read.
- Converting numbers for stylistic use in titles, chapter headings, or Super Bowl/Olympic-style event numbering.
- Checking homework or quiz answers that ask you to convert numbers to Roman numerals or vice versa.
- Looking up what a specific Roman numeral, like "XL" or "MCM", means in ordinary numbers.
FAQs
How do I convert a number to Roman numerals?
Type your number into the "Number" field (any whole number from 1 to 3999) and the Roman numeral translation appears immediately in the "Roman Numeral" field below — no extra steps or button presses needed.
Can I convert Roman numerals back to regular numbers with this tool?
Yes — this tool converts in both directions. Type the Roman numeral (like "MCMXCIV" or "XIV") into the "Roman Numeral" field and the regular (decimal) number appears instantly in the "Number" field — this is the same as translating Roman numerals to English or converting a Roman number to an English number.
What is the Roman numeral for 2024?
2024 in Roman numerals is "MMXXIV" (M + M + XX + IV = 1000 + 1000 + 20 + 4). You can enter any year into the Number field to see its Roman numeral equivalent the same way.
Why is there no number for zero in Roman numerals?
The classical Roman numeral system had no symbol for zero, which is why this converter supports whole numbers from 1 to 3999.
What's the largest number I can convert to Roman numerals?
This converter supports numbers up to 3999 (MMMCMXCIX), which is the practical limit of standard Roman numeral notation without adding special overline symbols for larger values.