🏛️ Roman Numeral Converter

Number ↔ Roman · Step-by-Step · Quiz Mode · Class 3–7

⚡ Try these

📖 Roman Numeral Symbols

SymbolValueMemory trick
I1One finger
V5Open hand (5 fingers)
X10Two hands crossed
L50Half a century
C100Centum (Latin: hundred)
D500Half of M
M1,000Mille (Latin: thousand)
📌 Subtraction rule: I before V or X (IV = 4, IX = 9) · X before L or C (XL = 40, XC = 90) · C before D or M (CD = 400, CM = 900)