Roman Numerals 1-100 Chart: The Ultimate Reference Guide

Mastering Roman numerals from 1 to 100 is the first step to understanding this ancient numbering system. While the basic rules are straightforward, certain numbers like 4, 9, 40, and 90 often trip people up.

This guide provides a comprehensive 1-100 chart broken down into easy-to-read sections, along with tips to help you memorize them.

For larger numbers or instant conversion, feel free to use our Roman Numeral Converter.

1. Complete Roman Numerals Chart (1-100)

We’ve organized the numbers into groups of 10. Notice how the pattern for the “ones” digit (1-9) repeats in every section.

1 to 10

The foundation. Memorize these, and you’re halfway there.

Number	Roman Numeral
1	I
2	II
3	III
4	IV
5	V
6	VI
7	VII
8	VIII
9	IX
10	X

11 to 20

Add the ones to 10 (X).

Number	Roman Numeral
11	XI
12	XII
13	XIII
14	XIV
15	XV
16	XVI
17	XVII
18	XVIII
19	XIX
20	XX

21 to 30

Add the ones to 20 (XX).

Number	Roman Numeral
21	XXI
22	XXII
23	XXIII
24	XXIV
25	XXV
26	XXVI
27	XXVII
28	XXVIII
29	XXIX
30	XXX

31 to 40

Watch out for 40, which changes to 50-10 (XL).

Number	Roman Numeral
31	XXXI
32	XXXII
33	XXXIII
34	XXXIV
35	XXXV
36	XXXVI
37	XXXVII
38	XXXVIII
39	XXXIX
40	XL

41 to 50

Based on 40 (XL).

Number	Roman Numeral
41	XLI
42	XLII
43	XLIII
44	XLIV
45	XLV
46	XLVI
47	XLVII
48	XLVIII
49	XLIX
50	L

51 to 60

Based on 50 (L).

Number	Roman Numeral
51	LI
52	LII
53	LIII
54	LIV
55	LV
56	LVI
57	LVII
58	LVIII
59	LIX
60	LX

61 to 70

Based on 60 (LX).

Number	Roman Numeral
61	LXI
62	LXII
63	LXIII
64	LXIV
65	LXV
66	LXVI
67	LXVII
68	LXVIII
69	LXIX
70	LXX

71 to 80

Based on 70 (LXX).

Number	Roman Numeral
71	LXXI
72	LXXII
73	LXXIII
74	LXXIV
75	LXXV
76	LXXVI
77	LXXVII
78	LXXVIII
79	LXXIX
80	LXXX

81 to 90

Watch out for 90, which changes to 100-10 (XC).

Number	Roman Numeral
81	LXXXI
82	LXXXII
83	LXXXIII
84	LXXXIV
85	LXXXV
86	LXXXVI
87	LXXXVII
88	LXXXVIII
89	LXXXIX
90	XC

91 to 100

Based on 90 (XC), ending with 100 (C).

Number	Roman Numeral
91	XCI
92	XCII
93	XCIII
94	XCIV
95	XCV
96	XCVI
97	XCVII
98	XCVIII
99	XCIX
100	C

2. Patterns and Tips

Once you see the chart, the patterns become clear. Here is what you need to focus on to memorize them quickly.

The 5 Core Symbols

For numbers 1-100, you only use five letters:

• I (1)
• V (5)
• X (10)
• L (50)
• C (100)

The “Subtraction” Triggers

The hardest numbers are those involving 4 and 9, because they use the subtraction rule (placing a smaller value before a larger one):

• 4 = IV (5-1)
• 9 = IX (10-1)
• 40 = XL (50-10)
• 90 = XC (100-10)

Tip: If you see a number ending in 4 or 9, expect a subtraction.

The “99” Trap

A common mistake is writing 99 as IC (100-1). This is incorrect. Roman numerals work by breaking the number down into place values (tens and ones):

1. Break it down: 90 + 9
2. Convert 90: XC
3. Convert 9: IX
4. Combine: XCIX

Similarly, 49 is XLIX (40+9), never IL.

3. Summary

Roman numerals follow a logical structure that, once understood, is easy to replicate. Mastering the 1-100 chart gives you the confidence to read dates, chapter numbers, and clock faces with ease.

Want to double-check your work or convert a year like 1998? Try our Roman Numeral Converter for instant results.