Is the Roman numeral converter free?

Yes! Our Roman numeral converter is completely free with no registration required. Convert unlimited numbers between Arabic and Roman numerals at no cost.

What number range does it support?

The converter supports Arabic numbers from 1 to 3999, which covers the traditional range of Roman numerals used in classical and medieval periods.

Does it explain subtractive notation?

Yes! The reference guide includes subtractive notation examples like IV (4), IX (9), XL (40), XC (90), CD (400), and CM (900) with clear explanations.

Can I see my conversion history?

Absolutely! The converter tracks your conversion history so you can review previous conversions and learn from patterns in Roman numeral formation.

Is it useful for education?

Yes! The tool includes educational features like symbol guides, subtractive notation explanations, and examples perfect for students, teachers, and history enthusiasts.

Free Roman Numeral Converter - Arabic to Roman & Vice Versa

🔢 Arabic to Roman

Enter a number (1-3999):

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🏛️ Roman to Arabic

Enter Roman numerals:

Enter Roman numerals above

📚 Roman Numeral Guide

Basic Symbols

Roman	Arabic
I	1
V	5
X	10
L	50
C	100
D	500
M	1000

Subtractive Notation

Roman	Arabic
IV	4
IX	9
XL	40
XC	90
CD	400
CM	900

📖 Conversion History

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