Enter an Arabic number (like 2024) or a Roman numeral (like MMXXIV) into the Roman Numeral Converter and get the converted result. The tool auto-detects your input type and shows the converted value along with a symbol-by-symbol breakdown of how the numeral is constructed. Supports numbers from 1 to 3,999.
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Symbol Breakdown
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Roman numerals are a number system that originated in ancient Rome, where letters represent numeric values. The system uses combinations of seven symbols — I, V, X, L, C, D, and M — to represent all numbers. It was widely used throughout Europe until Arabic numerals replaced them around the 14th century.
There are seven core Roman numeral symbols: I = 1, V = 5, X = 10, L = 50, C = 100, D = 500, and M = 1,000. All numbers from 1 to 3,999 can be represented using combinations of these symbols, following specific rules about addition and subtraction.
Roman numerals are generally read from left to right, adding values together. However, when a smaller value appears before a larger one, it is subtracted — for example, IV = 4 (5 minus 1) and IX = 9 (10 minus 1). This subtractive notation applies to six specific combinations: IV, IX, XL, XC, CD, and CM.
This converter supports numbers from 1 to 3,999 (I to MMMCMXCIX). The number 4,000 cannot be represented in standard Roman numerals without using an overline notation (a bar over a numeral multiplies it by 1,000), which is outside the scope of this converter.
Roman numerals are still commonly used on clock and watch faces, in book chapter numbering, for film and TV sequels (e.g. Super Bowl LVIII), on building cornerstones, in outlines, and for naming monarchs and popes. They are also popular in tattoo designs to represent meaningful dates.
Writing IIII would violate the rule that no symbol can be repeated more than three times in a row. Instead, the subtractive notation IV is used — placing I before V means 'one less than five.' The same principle applies to 9 (IX), 40 (XL), 90 (XC), 400 (CD), and 900 (CM).
No — the Roman numeral system has no symbol for zero and cannot represent negative numbers or fractions. This was one of the key limitations that led to the eventual adoption of the Hindu-Arabic numeral system, which includes zero and positional notation.
To write a date in Roman numerals, convert each component (month, day, year) separately. For example, July 4, 1776 becomes VII.IV.MDCCLXXVI. Tattoo designs often use dots, dashes, or periods as separators between the month, day, and year values.