Number
20 in Roman numerals
20 is written XX
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 XX is built
Roman numerals are written one decimal place at a time, largest first.
- XXtens · 2X written 2 times: 2 × 10 = 20.
Mistakes to avoid
- There's no letter for zero. The zero is simply left out, which is why 20 has 1 part, not 2.
About the number 20
- 20 is even and can be split into prime factors: 2 × 2 × 5, or in Roman numerals II × II × V.
- XX has 2 letters. 969 of the numbers up to 1,000 have longer numerals.
- As a day of the month, XX is the 20th. Write a date
Counting from 11 to 20
| Number | Roman numeral |
|---|---|
| 11 | XI |
| 12 | XII |
| 13 | XIII |
| 14 | XIV |
| 15 | XV |
| 16 | XVI |
| 17 | XVII |
| 18 | XVIII |
| 19 | XIX |
| 20 | XX |