Roman Numerals 1-100

Need a number above 100? Use the converter.

The pattern

From 1 to 100 you only need 5 symbols: I (1), V (5), X (10), L (50), and C (100).
36 of the 100 numbers use subtraction: every number with a 4 or a 9 in one of its places, such as 4 (IV), 9 (IX), 40 (XL), and 90 (XC).
Each number is its ten followed by its unit, read from left to right: 97 (XCVII) is XC + VII, and 94 (XCIV) is XC + IV.
The longest is 88, LXXXVIII, with 8 letters.

Building blocks

Every number here is put together from these pieces, from the largest place to the smallest.

Building blocks
Digit	Units	Tens
1	I 1	X 10
2	II 2	XX 20
3	III 3	XXX 30
4	IV 4	XL 40
5	V 5	L 50
6	VI 6	LX 60
7	VII 7	LXX 70
8	VIII 8	LXXX 80
9	IX 9	XC 90

Common mistakes

Wrong: IC

Why isn't 99 written IC?

Only I, X and C subtract, and only from the next two symbols (IV, IX, XL, XC, CD, CM). The correct form is XCIX: XC (90) + IX (9).

Wrong: ~~LXXXX~~

Why isn't 90 written LXXXX?

A symbol can repeat at most three times in a row. The correct form is XC: C − X.

Wrong: ~~XXC~~

Why isn't 80 written XXC?

Only one smaller symbol can come before a larger one. The correct form is LXXX: L + X + X + X.

How to remember them

The rules behind every row are explained in how Roman numerals work.

Try it

Five numbers from this list. Answer in your head, then open the answer.

1.How do you write 43?Show the answer
XLIII
2.What number is XC?Show the answer
90
3.How do you write 70?Show the answer
LXX
4.What number is LXXXVIII?Show the answer
88
5.How do you write 33?Show the answer
XXXIII

Common questions

Which numbers from 1 to 100 use subtraction?

36 of the 100: every number that has a 4 or a 9 in its units, tens or hundreds. The first ones are 4 (IV), 9 (IX), 14 (XIV), and 19 (XIX); the last one is 99 (XCIX).

What is the longest Roman numeral from 1 to 100?

LXXXVIII (88), with 8 letters.