---
title: "31 in words"
description: "31 in words is \"thirty-one\". Ordinal form, the British spelling, how to write it on a cheque, and where each word comes from."
url: https://atoneplace.net/number-to-words/31/
site: "At One Place"
---

# 31 in words

**31 in words: Thirty-one**

31 is written "thirty-one". That spelling is the same in British and American English.

## Where each word comes from

*30 + 1 = 31*

| Digit | Place | Worth | Spoken as |
| --- | --- | --- | --- |
| 3 | tens | 30 | thirty |
| 1 | ones | 1 | one |

## The same number, other ways

- **In words (US):** Thirty-one
- **In words (UK):** Thirty-one
- **Ordinal:** 31st — thirty-first
- **Roman numeral:** XXXI
- **Digits:** 31

## Writing it on a cheque

On a cheque the amount line reads "Thirty-one and 00/100" — or "Thirty-one only" in Indian and much of Commonwealth practice. The fraction or the word "only" exists to stop anyone appending digits after what you wrote. Draw a line through any space left over for the same reason.

## Common questions

### How do you write 31 in words?

Thirty-one. In British English, "thirty-one".

### What is the ordinal of 31?

Thirty-first, written 31st.

## Related pages

- [31 in Roman numerals](https://atoneplace.net/roman-numerals/31/)
- [28 in words](https://atoneplace.net/number-to-words/28/)
- [29 in words](https://atoneplace.net/number-to-words/29/)
- [30 in words](https://atoneplace.net/number-to-words/30/)
- [32 in words](https://atoneplace.net/number-to-words/32/)
- [0 in words](https://atoneplace.net/number-to-words/0/)
- [8 in words](https://atoneplace.net/number-to-words/8/)
- [11 in words](https://atoneplace.net/number-to-words/11/)
- [12 in words](https://atoneplace.net/number-to-words/12/)
- [13 in words](https://atoneplace.net/number-to-words/13/)
- [15 in words](https://atoneplace.net/number-to-words/15/)
- [19 in words](https://atoneplace.net/number-to-words/19/)
- [20 in words](https://atoneplace.net/number-to-words/20/)

## Sources

- Calculated on this page — At One Place (/about/)