A numeric system, which appeared in Ancient Rome. It is a way of writing numbers with letters and combinations of letters from the Latin Alphabet. The version which is known today is based on seven symbols I for 1, V for 5, X for 10, L for 50, C for 100, D for 500, M for 1,000. You can convert Roman Numerals to other units here by enter amount of if into green input below. You can also check some basic conversions in Roman Numerals Conversion Table.