Convert numbers to Roman numerals and Roman numerals back to numbers — with a date and birthday converter.
Pick a date to see the day, month and year in Roman numerals — the layout most people use for birthday, anniversary and tattoo designs.
| Input | Output |
|---|---|
| 2026 | MMXXVI |
| MMXXVI | 2026 |
| 1987 | MCMLXXXVII |
| 49 | XLIX |
| 3999 | MMMCMXCIX |
| 0 | no Roman numeral exists |
2026 = MMXXVI: 2000 is MM, 20 is XX and 6 is VI.
Roman numerals are a counting notation built on additive symbols with no placeholder for nothing. As a result zero, negative numbers and values above 3999 cannot be written in standard Roman numerals.
3999 = MMMCMXCIX. No standard symbol may repeat more than three times, so 4000 and above needed a bar drawn over a numeral to multiply it by 1,000 — a convention this converter does not use.
Yes — use the date box below the converter. It shows the day, month and year separately, plus the full date in both day-month-year and month-day-year order, which is the layout used for birthday and tattoo designs.