Roman Numeral Converter

Roman Numeral Converter

The Roman Numeral Converter allows you to convert numbers into Roman numerals and Roman numerals back into standard Arabic numbers. It is also useful for converting dates into Roman numeral format.

What are Roman Numerals?

Roman numerals are a number system that originated in ancient Rome and is still used today in clocks, book chapters, movie titles, and special events.

• Uses symbols like I, V, X, L, C, D, M
• No symbol for zero
• Based on addition and subtraction rules

Basic Roman Numeral Values

• I = 1
• V = 5
• X = 10
• L = 50
• C = 100
• D = 500
• M = 1000

Example Conversion

Example: LXIII = 63

Roman Numeral Date Converter

The Roman Numeral Date Converter allows conversion of full dates into Roman numeral format, including day, month, and year.

• Supports formats like YYYY/MM/DD
• Can convert multiple values at once
• Uses separators like /, -, ., or space

Example Date Conversion

Example: 2026/05/24

Days of the Week in Roman Numerals

Roman numerals are also used to represent days of the week where Monday starts as I and Sunday ends as VII.

Rules of Roman Numerals

• Letters are added when placed from largest to smallest
• Smaller number before larger number means subtraction
• No symbol is repeated more than three times
• V, L, and D are never repeated

Applications of Roman Numerals

• Clock faces and watches
• Book chapters and outlines
• Movie sequels and titles
• Events like Olympics and Super Bowl

FAQs

What are Roman numerals?
Roman numerals are a number system using letters like I, V, X, L, C, D, and M.

What is LXIII in numbers?
LXIII equals 63.

How do you write dates in Roman numerals?
Each part of the date (day, month, year) is converted into Roman numerals.

What is the Roman numeral for 2026?
2026 = MMXXVI

References

• Wikipedia - Roman Numerals
• Math Is Fun - Roman Numerals
• Britannica - Roman Numerals