Roman Numeral Converter
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Roman Numeral Converter
Convert numbers to Roman numerals and back — instantly and free.
🔢 Convert to Roman
⚡ Quick:
What Are Roman Numerals?
Roman numerals are a numeral system that originated in ancient Rome and remained the standard throughout Europe into the Late Middle Ages. They use combinations of letters from the Latin alphabet: I, V, X, L, C, D, M.
Roman Numeral Symbols
Rules of Roman Numerals
- Symbols are written from largest to smallest, left to right
- When a smaller symbol comes BEFORE a larger one, subtract it (IV = 4)
- When a smaller symbol comes AFTER a larger one, add it (VI = 6)
- Only I, X, C, M can be repeated (max 3 times)
- V, L, D are never repeated
- Standard range: 1 to 3999
Examples
- 4 = IV (5 − 1)
- 9 = IX (10 − 1)
- 40 = XL (50 − 10)
- 90 = XC (100 − 10)
- 400 = CD (500 − 100)
- 900 = CM (1000 − 100)
- 2024 = MMXXIV
Why Use Our Converter?
Our tool is fast, accurate, and bidirectional. It converts numbers to Roman numerals and Roman numerals back to numbers. It validates input, shows symbol breakdown, and handles the full 1–3999 range.
Key Features
- 🔢 Number → Roman conversion
- 🏛️ Roman → Number conversion
- ✅ Full 1–3999 range support
- 📊 Symbol frequency breakdown
- ⚡ Instant results
- 🔐 100% private — nothing leaves your browser
Real-World Uses
- 📅 Copyright years — like MMXXIV
- 👑 Royal names — King Henry VIII
- 🏛️ Building dates — on monuments
- 🎬 Movie sequels — Rocky IV, Rocky V
- ⏰ Clock faces — I to XII
- 📖 Book chapters — Chapter XIV
- 🏈 Super Bowl — Super Bowl LVIII
❓ Frequently Asked Questions
What are Roman numerals?
A numeral system from ancient Rome using the symbols I, V, X, L, C, D, M to represent numbers.
Is this Roman Numeral Converter free?
Yes, 100% free with no signup a
