What does CDXCIV mean?

CDXCIV is the Roman numeral for 494 — 400 + 90 + 4.

How do you write 494 in Roman numerals?

Take the largest value that fits and repeat until nothing is left: CD (400), then XC (90), then IV (4). That gives CDXCIV.

494 in Roman numerals

CDXCIV

Number (1–3,999 for numerals)

Roman numeral

494 is written CDXCIV in Roman numerals. That is 3 symbol groups added together, reading left to right from the largest value down.

How it breaks down

CDXCIV = 400 + 90 + 4 = 494
Group	Value	Subtraction	Running total
CD	400	D − C	400
XC	90	C − X	490
IV	4	V − I	494

Why the smaller symbol comes first

CDXCIV uses subtractive notation in 3 places: CD means D minus C, or 400; XC means C minus X, or 90; IV means V minus I, or 4. 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 — 1×
V	5	yes — 1×
X	10	yes — 1×
L	50	no
C	100	yes — 2×
D	500	yes — 1×
M	1,000	no

The same number, other ways

In words: Four hundred ninety-four
Roman numeral: CDXCIV
Symbol count: 6 characters
Binary: 111101110
Hexadecimal: 1EE

The numbers either side

Number	Roman numeral
492	CDXCII
493	CDXCIII
494	CDXCIV ←
495	CDXCV
496	CDXCVI

Common questions

What is 494 in Roman numerals?: 494 is CDXCIV.
What does CDXCIV mean?: CDXCIV is the Roman numeral for 494 — 400 + 90 + 4.
How do you write 494 in Roman numerals?: Take the largest value that fits and repeat until nothing is left: CD (400), then XC (90), then IV (4). That gives CDXCIV.

Sources

Calculated on this page — At One Place

How these figures are compiled and checked