Number
304 in Roman numerals
304 is written CCCIV
Type any other number or numeral below to convert it.
Above 3,999? Type the barred part in brackets, e.g. (IV)CC = 4,200.
How CCCIV is built
Roman numerals are written one decimal place at a time, largest first.
- CCChundreds · 3C written 3 times: 3 × 100 = 300.
- IVones · 4I before V means 5 − 1 = 4. This saves writing IIII.
300 + 4 = 304
The pair IV uses subtraction: a smaller letter before a larger one is taken away from it. Only six pairs work this way: IV, IX, XL, XC, CD and CM. More on subtraction
Mistakes to avoid
- Not CCCIIII (7 letters). That adds everything up without subtraction. The Romans sometimes wrote numbers this way, and clocks still show 4 as IIII, but today CCCIV (5 letters) is the standard.
- There's no letter for zero. The zero is simply left out, which is why 304 has 2 parts, not 3.
About the number 304
- 304 is even and can be split into prime factors: 2 × 2 × 2 × 2 × 19, or in Roman numerals II × II × II × II × XIX.
- CCCIV has 5 letters. 604 of the numbers up to 1,000 have longer numerals.
Counting from 301 to 310
Every number from 301 to 310 starts CCC (300); only the ending changes.
| Number | Roman numeral |
|---|---|
| 301 | CCCI |
| 302 | CCCII |
| 303 | CCCIII |
| 304 | CCCIV |
| 305 | CCCV |
| 306 | CCCVI |
| 307 | CCCVII |
| 308 | CCCVIII |
| 309 | CCCIX |
| 310 | CCCX |