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Table N-3
Selected Unicode Roman numerals
and their HTML Entities
value plain textcharacters   value plain textcharacters
1 I
I
i
i

Ⅰ

ⅰ
  9  
Ⅸ

ⅸ
2  
Ⅱ

ⅱ
  10 X
X
x
x

Ⅹ

ⅹ
3  
Ⅲ

ⅲ
  11  
Ⅺ

ⅺ
4  
Ⅳ

ⅳ
  12  
Ⅻ

ⅻ
5 V
V
v
v

Ⅴ

ⅴ
  50 L
L
l
l

Ⅼ

ⅼ
6  
Ⅵ

ⅵ
  100 C
C
c
c

Ⅽ

ⅽ
7  
Ⅶ

ⅶ
  500 D
D
d
d

Ⅾ

ⅾ
8  
Ⅷ

ⅷ
  1000 M
M
m
m

Ⅿ

ⅿ

Unicode supplies special uppercase characters for the numbers 1 through 12 to support traditional clock faces. However, Unicode's Roman numeral for 4 is IV, rather than the IIII often employed for that purpose.

A "j" (j) is sometimes substituted for the final "i" of a lower-case Roman numeral, for example "ij" for 2 or "viij" for 8. However, Unicode makes no provision for this.

Unicode provides two special characters for writing very large Roman numerals:

Table N-3-a
apostrophus
upper caselower case

Ↄ

ↄ
use of apostrophus
valuechars valuechars
500 ⅠↃ 1,000 ⅭⅠↃ
5,000 ⅠↃↃ 10,000 ⅭⅭⅠↃↃ
50,000 ⅠↃↃↃ 100,000 ⅭⅭⅭⅠↃↃↃ