- Enter the Roman Numeral Converter input in the field on the page.
- Click "Convert" to run the tool in your browser.
- Read the result below the form and copy it if you need it in another app.
Roman Numeral Converter
Convert standard integers to Roman numerals and vice versa with this tool.
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How to Use This Tool
Learn More About Roman Numeral Converter
Roman Numerals
Roman numerals are a numeral system that originated in ancient Rome and remained the usual way of writing numbers throughout Europe well into the Late Middle Ages. Numbers are represented by combinations of letters from the Latin alphabet.
Common Roman Numerals
- I = 1
- V = 5
- X = 10
- L = 50
- C = 100
- D = 500
- M = 1000
About
Convert standard integers to Roman numerals and vice versa with this tool. Enter a number (1-3999) to see its Roman numeral equivalent, or enter a Roman numeral to convert it back to an integer.
Examples
Valid number
Number or Roman numeral
Input
1
Output
I
Valid number
Number or Roman numeral
Input
3999
Output
MMMCMXCIX
Use Cases
- Converting dates to Roman numerals for inscriptions or tattoos
- Educational purposes for learning about Roman numerals
- Historical research and document analysis
- Creating visually appealing numbering systems for outlines or lists