Roman Numerals Converter: Convert Numbers to Roman Numerals Online

What are Roman Numerals?

Rule 1: Addition

• VI = 5 + 1 = 6XV = 10 + 5 = 15LXX = 50 + 10 + 10 = 70

Rule 2: Subtraction

• IV = 5 - 1 = 4IX = 10 - 1 = 9XL = 50 - 10 = 40XC = 100 - 10 = 90

Rule 3: Repetition

• III = 1 + 1 + 1 = 3XXX = 10 + 10 + 10 = 30CCC = 100 + 100 + 100 = 300

Rule 4: No Subtraction for 5s

• V, L, D cannot be subtractedWrite 95 as XCV (100 - 10 + 5), not VC

Step-by-Step Method

1. Break into thousands: 1000 = MHundreds: 900 = CMTens: 90 = XCOnes: 4 = IVCombine: MCMXCIV

1. 3000 = MMM800 = DCCC80 = LXXX8 = VIIICombine: MMMDCCCLXXXVIII

1. Clock Faces

• Traditional clocks use Roman numeralsIIII instead of IV on many clocks

2. Movie Credits

• Copyright years often in Roman numeralsSuper Bowl numbers

3. Royal Names

• Queen Elizabeth IIKing Charles IIIMughal emperors

4. Book Chapters

• Volume I, Chapter IIPart III

5. Outlines

• Section I, Section IIArticle 1, Article 2

Historical Use

• Mughal architecture inscriptionsBritish colonial buildingsTraditional temples

Modern Use

• Movie release years (still rare)Government notificationsLegal document sections

Convert to Roman Numerals

1. 47 = XLVII99 = XCIX156 = CLVI789 = DCCLXXXIX2026 = MMXXVI

Convert to Numbers

1. XIV = 14XLII = 42CXC = 190MMXXIV = 2024MCMXCV = 1995