300 = CCC
300 in Roman numerals is CCC.
Three hundred written with the letters C C C.
300 in words: Three hundred
300 in Roman numerals is CCC. As a round number it breaks down cleanly into CCC (300), which makes it a useful anchor point when you are reading longer numerals.
Round hundreds and thousands like this are worth memorising, because most other numerals are just these anchors with a few extra letters added on the end.
How 300 breaks down
Reading CCC from left to right, each group is added together to reach 300:
| Group | Value | Place |
|---|---|---|
| CCC | 300 | hundreds |
| CCC | 300 | total |
Frequently asked questions
What is 300 in Roman numerals?
300 in Roman numerals is CCC.
How do you write 300 in words?
300 is written "Three hundred" in English.
What number comes before CCC?
The number before CCC is 299, written CCXCIX in Roman numerals.
What number comes after CCC?
The number after CCC is 301, written CCCI in Roman numerals.
Related numbers
Last updated July 22, 2026. Reviewed for accuracy against the standard rules for Roman numerals.