Convert Roman Numerals
Roman numerals represent values with ordered symbols and standard subtractive pairs. The converter applies those rules to valid integers.
Formula: Use place-value symbols such as I, V, X, L, C, D and M with subtractive forms IV, IX, XL, XC, CD and CM
Use the exact inputs shown by the calculator and keep units or notation consistent. The displayed formula provides a useful way to review the arithmetic.
Verify the result by reversing the conversion with the reciprocal factor; the original value should be recovered apart from rounding.