Number
10 in Roman numerals
10 is written X
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 X is built
Roman numerals are written one decimal place at a time, largest first.
- Xtens · 1X is 10.
Mistakes to avoid
- There's no letter for zero. The zero is simply left out, which is why 10 has 1 part, not 2.
About the number 10
- 10 is even and can be split into prime factors: 2 × 5, or in Roman numerals II × V.
- X is a single letter, one of only seven in the system: I, V, X, L, C, D and M.
- On a clock face, 10 o'clock is X.
- As a month in a date, X is October.
- As a day of the month, X is the 10th. Write a date
Counting from 1 to 10
| Number | Roman numeral |
|---|---|
| 1 | I |
| 2 | II |
| 3 | III |
| 4 | IV |
| 5 | V |
| 6 | VI |
| 7 | VII |
| 8 | VIII |
| 9 | IX |
| 10 | X |