Roman Numerals & Date Converter
Convert between standard Numbers, Calendar Dates, and Roman Numerals instantly.
Mode 1: Number Conversion
Mode 2: Date to Roman
What is the Roman Numerals Converter?
The Roman Numerals Converter translates the modern Arabic base-10 number system into the ancient Latin counting system. It is heavily used in publishing, legal documents, movie copyright dates, and clock faces.
How It Works (Logic)
Roman numerals are not a base-10 system; they use specific letters for values (I=1, V=5, X=10, L=50, C=100, D=500, M=1000). The algorithm calculates the value by adding symbols together, or using subtractive notation (e.g., IV = 4) when a smaller symbol precedes a larger one.
M = 1000 | CM = 900 | L = 50 | IX = 9
The subtractive combination logic used to build Roman Numeral strings.
How to Use It
The tool works bi-directionally. You can type a standard number (like 2024) to generate the Roman equivalent (MMXXIV). Conversely, you can type a Roman string to decode it back into a modern Arabic integer.