Number Digit tool

21 in Words

Learn how to write 21 in English words, see the correct spelling, and move to the previous or next number.

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21 in Words

21 in words is twenty-one.

Normalized number
21
Language
English
Style
American English

Number Breakdown

21 = 2 tens + 1 one

Number Practice

Number to Words

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Write 21 in words:

English Style Variants

Ways to write 21 in English words
Style Words
American English twenty-one
British English twenty-one

Why is 21 written as twenty-one?

Why the 21 part uses a hyphen

Compound numbers from 21 through 99 join the tens word and the ones word with a hyphen. In 21, the 21 part combines twenty and one, producing twenty-one.

Nearby Numbers in Words

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Numbers 21 to 30 in Words
Number Words
21 twenty-one
22 twenty-two
23 twenty-three
24 twenty-four
25 twenty-five
26 twenty-six
27 twenty-seven
28 twenty-eight
29 twenty-nine
30 thirty