Should a date use day-month-year or month-day-year?

Either works for decoration. Day-month-year (V.VI.MMXXVI) is common in Europe; month-day-year is common in the US. Pick one and keep the separators consistent.

Full dates · Weddings · Anniversaries

Writing a Full Date in Roman Numerals

Q: How do you write a date in Roman numerals?

Convert the day, month and year separately and join them with a separator such as a dot or slash. For example 5 June 2026 becomes V · VI · MMXXVI.

Q: How do you write a month in Roman numerals?

Use the month number from 1 to 12: January is I, June is VI, December is XII.

Updated: June 2026

A date is three numbers — a day, a month and a year — so converting one is really three small conversions joined together. The choices that matter are which order to put them in and how to separate them, especially when the result is destined for a ring, a pendant or a tattoo where every character is permanent.

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The three pieces

Convert the day (1–31), the month as a number (1–12) and the four-digit year separately, then string them together. Take 5 June 2026:

day   5  → V
month 6  → VI
year  2026 → MMXXVI
result → V · VI · MMXXVI

The day and month are always small numbers, so they use only I, V and X with the occasional XX or XXX. The year does the heavy lifting. Convert each part in the tool one at a time, then assemble them by hand with your chosen separator.

Months at a glance

Month	Roman	Month	Roman
January (1)	I	July (7)	VII
February (2)	II	August (8)	VIII
March (3)	III	September (9)	IX
April (4)	IV	October (10)	X
May (5)	V	November (11)	XI
June (6)	VI	December (12)	XII

Choosing an order and separator

There is no universal rule for decorative dates, so pick a format and stay consistent:

Day · Month · Year — common in Europe: V · VI · MMXXVI.
Month · Day · Year — common in the US: VI · V · MMXXVI.
Separators — a middle dot (·), a period, a slash or simply a space all read well. A dot is the most popular for tattoos because it keeps the letters from blurring together.

Because a Roman date has no built-in clue about which part is the day and which is the month, decide the order before engraving and note it somewhere — II · III could be 2 March or 3 February depending on the convention.

Worked examples

Date	Day·Month·Year
1 January 2000	I · I · MM
14 February 2025	XIV · II · MMXXV
25 December 1990	XXV · XII · MCMXC
31 October 2026	XXXI · X · MMXXVI

Before you commit it to metal or skin

Convert each number back to a digit to confirm there is no slip — the tool round-trips instantly.
Keep the separators evenly spaced; a designer will thank you for a clean reference string.
Remember 4 is IV and 9 is IX — a "four ones" form like IIII is non-standard everywhere except some clock faces.
Photograph or copy the final string rather than re-typing it later, so no character drifts.

Frequently asked questions

How do you write a date in Roman numerals?

Convert day, month and year separately and join them with a separator, e.g. 5 June 2026 → V · VI · MMXXVI.

How do you write a month in Roman numerals?

Use its number: January is I, June is VI, December is XII.

Day-month-year or month-day-year?

Either is fine for decoration. Choose one, keep the separators consistent, and note the order so the date can be read back correctly.

What separator should I use for a tattoo?

A middle dot or period is the most popular; it keeps the day, month and year visually distinct.