Roman Numeral Converter (Dates)

Convert any date into Roman numerals — or decode a Roman numeral date back into numbers. Enter a month, day, and year, then choose your preferred date format (US, EU, or ISO) and separator (dot, dash, slash, or space) to get your formatted Roman numeral date. Perfect for tattoos, jewelry, anniversaries, and birthdays. The Roman Numeral ↔ Number converter also lets you translate any number up to 3999 into Roman numerals and back.

Enter a year between 1 and 3999

Enter any number from 1 to 3999 to convert it to Roman numerals

Enter Roman numerals (e.g. MCMXC) to convert back to a number

Results

Your Date in Roman Numerals

--

Month in Roman Numerals

--

Day in Roman Numerals

--

Year in Roman Numerals

--

Number → Roman Numeral

--

Roman Numeral → Number

--

Results Table

Frequently Asked Questions

What is the highest number or year I can convert to Roman numerals?

The highest value you can convert is 3,999 (MMMCMXCIX). The number 4,000 cannot be represented using standard Roman numeral characters (I, V, X, L, C, D, M), which is why most converters cap at 3,999.

How do I write a date in Roman numerals for a tattoo?

Enter your month, day, and year into the converter, then choose your preferred separator — a dot (.) and dash (-) are the most common styles for tattoos. You'll get the full formatted Roman numeral date ready to use. For example, June 15, 1990 in US format with dots becomes VI.XV.MCMXC.

What are the 7 Roman numeral symbols and their values?

The seven standard Roman numeral symbols are: I = 1, V = 5, X = 10, L = 50, C = 100, D = 500, and M = 1,000. All numbers up to 3,999 are built by combining and arranging these seven characters.

What does the subtractive notation rule mean in Roman numerals?

Subtractive notation is used when a smaller numeral appears before a larger one, meaning you subtract it. For example, IV = 4 (5 minus 1), IX = 9 (10 minus 1), XL = 40, XC = 90, CD = 400, and CM = 900. This avoids repeating a symbol more than three times in a row.

Where are Roman numerals still used today?

Roman numerals appear on clock and watch faces, in book chapter numbering, on movie and TV sequel titles, for major sporting events like the Super Bowl and Olympics, on buildings and monuments to mark construction years, and in academic and legal documents.

How do I convert a Roman numeral date back to a regular date?

Use the 'Roman Numeral → Number' field in the converter. Simply type in a Roman numeral (like MCMXC) and the tool will decode it into its Arabic number equivalent. For a full date, you can decode each part — month, day, and year — individually.

What date format should I use — US, EU, or ISO?

The US format (MM.DD.YYYY) is most common in North America, while EU format (DD.MM.YYYY) is standard in Europe and many other countries. ISO format (YYYY.MM.DD) is used in technical and international contexts. For tattoos and jewelry, US format with dots is the most popular choice.

Why can't Roman numerals represent zero?

The Roman numeral system was developed before the concept of zero was formally adopted in mathematics. Romans used the Latin word 'nulla' (meaning 'none') rather than a symbol. Zero was later introduced to Europe through Arabic numerals, which is why it doesn't exist in traditional Roman notation.

More Time & Date Tools