Why 18 uses a teen form
Numbers from 10 through 19 use special English forms. That is why 18 is written as eighteen instead of being built as a regular tens-and-ones phrase.
Number Digit tool
Learn how to write 18 in English words, see the correct spelling, and move to the previous or next number.
18 in words is eighteen.
18 = 1 ten + 8 ones
Number Practice
Write 18 in words:
| Style | Words |
|---|---|
| American English | eighteen |
| British English | eighteen |
Numbers from 10 through 19 use special English forms. That is why 18 is written as eighteen instead of being built as a regular tens-and-ones phrase.