Number to Roman Numerals

Enter Number:

Conversion Options

Show ExamplesDisplay common Roman numeral examples

Conversion Result

Common Roman Numerals:

1 = I

4 = IV

5 = V

9 = IX

10 = X

40 = XL

50 = L

90 = XC

100 = C

400 = CD

500 = D

900 = CM

1000 = M

Number Information:

Enter a number to see information

Note: This tool converts numbers to Roman numerals (1-3999).

About This Roman Numerals Converter

This tool converts Arabic numbers (1-3999) to Roman numerals. Roman numerals use combinations of letters from the Latin alphabet (I, V, X, L, C, D, M) to represent numbers. The converter follows the standard subtractive notation rules.

How to Use This Converter

Step-by-Step Guide:

1. Step 1: Enter a number between 1 and 3999
2. Step 2: Click "Convert to Roman" to see the Roman numeral equivalent
3. Step 3: View additional information about the number
4. Step 4: Copy or clear results as needed

Roman Numerals Rules:

• I = 1, V = 5, X = 10, L = 50, C = 100, D = 500, M = 1000
• When a smaller numeral appears before a larger one, it's subtracted (IV = 4, IX = 9)
• Otherwise, numerals are added (VI = 6, XI = 11)
• Only I, X, and C can be used for subtraction
• Only one smaller numeral can precede a larger one
• Numerals must decrease from left to right except for subtractive combinations

Example Conversions:

Input: 1987
Output: MCMLXXXVII

Input: 2023
Output: MMXXIII

Input: 3999
Output: MMMCMXCIX