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Roman Numeral Converter
Convert Roman numerals like CCCXXXIV to numbers and vice versa. Find out how to write the Roman number 4 or see your birth year in Roman numerals.
How to Convert to or from Roman Numerals
Enter any number between 1 and 3999 into theNumber field. The calculator will convert the number into aRoman numeral.
You can also enter Roman numerals (letters M, D, C, L, X, V, and I) into theRoman Numerals field. The calculator will convert it into a standard (Arabic) number.
How to Write and Count Roman Numerals
Roman numerals consist of the letters I, V, X, L, C, D, and M, representing 1, 5, 10, 50, 100, 500, and 1000.
The Roman Calendar
This is the predecessor to our modern calendar. Some of its features are still in use today.