Number Cardinal Ordinal
1 one first
2 two second
3 three third
4 four fourth
5 five fifth
6 six sixth
7 seven seventh
8 eight eighth
9 nine ninth
10 ten tenth
11 eleven eleventh
12 twelve twelfth
13 thirteen thirteenth
14 fourteen fourteenth
15 fifteen fifteenth
16 sixteen sixteenth
17 seventeen seventeenth
18 eighteen eighteenth
19 nineteen nineteenth
20 twenty twentieth
21 twenty-
one
twenty-first
22 twenty-
two
twenty-
second
23 twenty-
three
twenty-third
24 twenty-
four
twenty-
fourth
25 twenty-
five
twenty-fifth
26 twenty-six twenty-sixth
27 twenty-
seven
twenty-
seventh
28 twenty-
eight
twenty-
eighth
29 twenty-
nine
twenty-
ninth
30 thirty thirtieth
31 thirty-one thirty-first
40 forty fortieth
50 fifty fiftieth
60 sixty sixtieth
70 seventy seventieth
80 eighty eightieth
90 ninety ninetieth
100 one
hundred
hundredth
500 five
hundred
five
hundredth
1,000 one
thousand
thousandth
1,500 one
thousand
five
hundred,
or fifteen
hundred
one
thousand
five
hundredth
100,000 one
hundred
thousand
hundred
thousandth
1,000,000 one
million
millionth