WebToolArcHow to write a modern date in Roman numerals
Validate the Gregorian date first, then convert the day, month and year as three independent integers. For example, 14 February 2024 becomes XIV, II and MMXXIV. After that, choose the order and separator that fit the intended design.
There is no leading zero
Roman numerals are not positional decimal digits, so 04 becomes IV, not 0IV. The same rule applies to months and years: convert the number itself rather than transliterating each decimal character.
Canonical notation matters before a permanent design
Modern standard forms use IV for 4, IX for 9, XL for 40, XC for 90, CD for 400 and CM for 900. Decorative or historical inscriptions sometimes use alternatives, but this tool intentionally validates the canonical modern form so a copied date has one reproducible interpretation.
Date order can be more ambiguous than the numerals
IX·VII·MMXXVI could mean September 7 or 9 July if the reader does not know the order. For tattoos, rings and plaques, keep a DMY/MDY/YMD note in the design handoff even when the final art contains only Roman numerals.
Round-trip proof
A safe workflow converts each component to Roman numerals, decodes those Roman values back to Arabic integers, and then validates that the reconstructed year, month and day form the same Gregorian date. That catches malformed numerals and impossible dates such as 31 April.
Which separator should I use?
There is no universal modern requirement. Middle dots, periods, slashes, dashes and spaces are common styling choices. Compare them visually and keep the chosen order explicit in your records.
Can I use this for a tattoo?
Yes as a formatting and verification aid. For permanent work, independently confirm the source date, chosen order and spelling before the final design is applied.
Does IIII count as 4?
Some historical and clock-face contexts use IIII, but this tool's reverse validator treats IV as the canonical modern form and flags IIII rather than silently changing it.
Is this how ancient Romans wrote dates?
No. Ancient Roman calendrical notation used systems such as Kalends, Nones and Ides. This page applies Roman numeral symbols to components of a modern Gregorian date.
Why limit the year to 3999?
The tool stays within common standard Roman-numeral notation using I, V, X, L, C, D and M, without overlines or extended conventions.
Is the date uploaded?
No. Conversion runs in the browser. Local history is opt-in, and the settings-only share link excludes the selected date.