How to spell 1
1 is spelled one in English.
Quick reference
| US English (Cardinal) | one |
|---|---|
| Ordinal (1st) | first |
| On a US Check | One and 00/100 dollars |
| Roman Numeral | I |
| Binary / Hexadecimal | 1₂ · 0x1 |
On a check
To write $1.00 on a check, the words line reads:
One and 00/100