13 in Words
How do you write 13 in words?
The number 13 is written thirteen in words. As an ordinal it is thirteenth, and on a check you would write Thirteen and 00/100.
Last updated 24 August 2026
Other ways to write it
| Cardinal | thirteen |
|---|---|
| Ordinal | thirteenth |
| Currency | thirteen dollars |
| Check format | Thirteen and 00/100 |
How 13 is written
13 is the sum of its place values, 10 + 3, and is written thirteen.
Its ordinal form is thirteenth — only the final element takes the ordinal ending — and on a check the amount line reads "Thirteen and 00/100", where 00/100 stands for zero cents.
The last part is not built from its digits: English names 10 to 19 with single irregular words, so this is thirteen, never ten three.
For house-style rules on spelling out numbers, see the Chicago Manual of Style.
Facts about 13
- 13 is an odd number.
- It is a prime number.
- Digit sum: 4.
- Roman numerals: XIII.
- Binary: 1101.
- Hexadecimal: D.
| Digit | Place |
|---|---|
| 1 | tens |
| 3 | ones |
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Frequently asked questions
How do you write 13 in words?
13 in words is "thirteen".
How do you spell 13?
13 is spelled "thirteen".
How do you write 13 on a check?
On a check, write "Thirteen and 00/100".