Roman Numeral Date Converter

To convert a number to Roman Numerals, you simply need to break the number down into its component parts and then find the corresponding symbols. For example, the number 2019 can be broken down into 2000 + 10 + 9. Therefore, the Roman Numeral equivalent would be MM + X + IX, which is equal to MMXIX.

It's important to note that there are some rules that need to be followed when using Roman Numerals. First, symbols can only be repeated three times in a row. So, while you could technically write IIIII to represent the number 5, it's much more common (and correct) to use the symbol V instead.

Second, certain symbols can only be used if they're followed by another specific symbol. For example, the symbol I can only be subtracted from the symbols V or X. So, while IV could represent the number 4, IIV would be incorrect.

Third, only certain symbols can be subtracted, and each subtraction pair is fixed. I can only be subtracted from V and X, X can only be subtracted from L and C, and C can only be subtracted from D and M. A notation like IIV would be incorrect because you cannot subtract two of the same symbol at once.

Finally, symbols should not be repeated more than three times in a row. So III (3), XXX (30), and MMM (3000) are all valid, but IIII or MMMM would be non-standard.

3,999, written MMMCMXCIX. M is the largest symbol at 1,000, and a symbol cannot be repeated more than three times, so 4,000 has no standard notation. Medieval and early modern writers extended the system with a bar over a numeral (a vinculum) to multiply it by 1,000, but that convention is not part of standard Roman numerals and is not widely supported in plain text. Numbers above 3,999 are left as digits by this converter rather than written as four or more M's, which is not valid notation.

Roman numerals are a numeral system originating in ancient Rome and were used throughout the Roman Empire. They were based on the use of the letters of the alphabet, with certain letters representing certain values. Roman numeral dates are still common today on clock faces, building cornerstones, and film credits. To convert other types of numbers between formats, see the binary code translator, or spell figures out in full with the number to words converter.

Use whichever format you normally write dates in. The US format composes the picker as month/day/year (12/25/2000), while the UK and most other countries use day/month/year (25/12/2000). The Date Format field controls this order, and the Delimiter field next to it sets what goes between each part. Neither affects the free-text field, since each number there is converted to Roman numerals on its own, in the position you typed it, so the result is correct either way as long as you read it back in the same order you entered it.

Pick the date and set the Date Format to UK (DD/MM/YYYY) for day, month, year order: 25 December 2000 converts to XXV/XII/MM. A dot is a common substitute for the slash in engraved or printed designs (XXV.XII.MM), and some designs drop the separators entirely (XXVXIIMM) or stack the three groups on separate lines. The Delimiter field covers all of those, including none at all. Double-check the final numerals against the reference table on this page before sending a design to a jeweler or tattoo artist, since a transcription error is much harder to fix after the fact than in a text box.