Last Updated by Heng Jia Liang on 2025-07-11
1. The numeric system represented by Roman numerals originated in ancient Rome and remained the usual way of writing numbers throughout Europe well into the Late Middle Ages.
2. Roman Numerals Converter makes conversion from Arabic numbers to Roman numerals or Roman numerals to Arabic numbers fast and easy.
3. The original pattern for Roman numerals used the symbols I, V, and X (1, 5, and 10) as simple tally marks.
4. This feature of Roman numerals is called subtractive notation.
5. Simply enter the number in the box on the top, you will get the exact representation of the number in Roman Numeral Symbols.
6. The numerals for 4 (IIII) and 9 (VIIII) proved problematic (among other things, they are easily confused with III and VIII), and are generally replaced with IV (one less than 5) and IX (one less than 10).
7. Or enter the Roman Numeral in the box on the bottom and turn it into an ordinary number.
8. Numbers in this system are represented by combinations of letters from the Latin alphabet.
9. Note that 40 (XL) and 90 (XC) follow the same subtractive pattern as 4 and 9.
10. Again - 400 (CD) and 900 (CM) follow the standard subtractive pattern.
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