What does CMVIII mean?

CMVIII is the Roman numeral for 908 — 900 + 5 + 1 + 1 + 1.

How do you write 908 in Roman numerals?

Take the largest value that fits and repeat until nothing is left: CM (900), then V (5), then I (1), then I (1), then I (1). That gives CMVIII.

908 in Roman numerals

CMVIII

Number (1–3,999 for numerals)

Roman numeral

908 is written CMVIII in Roman numerals. That is 5 symbol groups added together, reading left to right from the largest value down.

How it breaks down

CMVIII = 900 + 5 + 1 + 1 + 1 = 908
Group	Value	Subtraction	Running total
CM	900	M − C	900
V	5	—	905
I	1	—	906
I	1	—	907
I	1	—	908

Why the smaller symbol comes first

CMVIII uses subtractive notation in one place: CM means M minus C, or 900. A smaller symbol placed before a larger one is subtracted from it rather than added, which is why IX is nine and not eleven.

Only six such pairs are valid — IV, IX, XL, XC, CD and CM. That restriction is what makes the notation unambiguous: IIII and IC both look like they should work, but neither is standard, and only one spelling of any number is correct.

The symbols

Symbol	Value	Used here
I	1	yes — 3×
V	5	yes — 1×
X	10	no
L	50	no
C	100	yes — 1×
D	500	no
M	1,000	yes — 1×

The same number, other ways

In words: Nine hundred eight
Roman numeral: CMVIII
Symbol count: 6 characters
Binary: 1110001100
Hexadecimal: 38C

The numbers either side

Number	Roman numeral
906	CMVI
907	CMVII
908	CMVIII ←
909	CMIX
910	CMX

Common questions

What is 908 in Roman numerals?: 908 is CMVIII.
What does CMVIII mean?: CMVIII is the Roman numeral for 908 — 900 + 5 + 1 + 1 + 1.
How do you write 908 in Roman numerals?: Take the largest value that fits and repeat until nothing is left: CM (900), then V (5), then I (1), then I (1), then I (1). That gives CMVIII.

Sources

Calculated on this page — At One Place

How these figures are compiled and checked