Question 1

How do you write 2026 in Roman numerals?

Accepted Answer

2026 is MMXXVI: MM = 2000, XX = 20, VI = 6. Years are read left to right in blocks of thousands, hundreds, tens, and ones. Other recent years follow the same pattern — 2025 is MMXXV, 2000 is simply MM, and 1999 is MCMXCIX.

Question 2

What is the largest Roman numeral?

Accepted Answer

With the standard seven letters (I, V, X, L, C, D, M) the largest number you can write is 3999, MMMCMXCIX, because four identical letters in a row are not allowed. The Romans extended the system with a vinculum — a bar over a letter multiplying it by 1000, so V̄ meant 5000 — but that notation is rarely used today, which is why this converter covers 1–3999.

Question 3

Why do clock faces use IIII instead of IV?

Accepted Answer

Traditional clock faces show 4 as IIII rather than the standard IV. Explanations vary: IIII balances the VIII on the opposite side of the dial visually, avoids confusing IV with VI when read upside down at an angle, and follows a much older additive style of writing numerals. It is a deliberate design tradition, not an error — but outside clock faces, IV is the correct form.

Question 4

Why is there no zero in Roman numerals?

Accepted Answer

The Roman system is additive, not positional: each letter carries a fixed value and you simply sum them, so there is no place value that needs an empty-slot marker. Medieval scholars sometimes wrote "nulla" or N for nothing, but zero as a digit only arrived in Europe with Hindu–Arabic numerals around the 12th century.

Question 5

How do I write my birthday in Roman numerals?

Accepted Answer

Convert the month, day, and year separately and join them with dots or interpuncts. December 25, 1998 becomes XII·XXV·MCMXCVIII. The "Birthday / date to Roman" tab above does exactly this — a popular format for tattoos, engagement ring engravings, and wall art. Double-check the result before anything permanent!

Number	Roman
30	XXX
40	XL
50	L
60	LX
70	LXX
80	LXXX
90	XC
100	C

Number	Roman
200	CC
300	CCC
400	CD
500	D
600	DC
700	DCC
800	DCCC
900	CM
1000	M

Roman Numeral Converter

Roman numerals chart

The subtractive rule: why 4 is IV, not IIII

No zero, and the clock-face exception

Dates in Roman numerals — the tattoo format

Frequently asked questions

Related tools

Number	Roman
1	I
2	II
3	III
4	IV
5	V
6	VI
7	VII
8	VIII
9	IX
10	X
11	XI
12	XII
13	XIII
14	XIV
15	XV
16	XVI
17	XVII
18	XVIII
19	XIX
20	XX