1 in words
British English
one
One is the only number that takes a singular noun: one page, but two pages. Its ordinal, first, shares no letter with it.
Quick reference
- In figures
- 1
- British English
- one
- American English
- The same (why they differ)
- Ordinal
- first (1st)
- Roman numeral
- I
- Place value
- 1 in the ones column
- Expanded form
- 1
- Standard form
- 1 × 10⁰
- Even or odd
- Odd
Convert any other number, up to thirty-six digits.